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Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module

Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module

$3.88$3.88

48% off
HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact

HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact

$495.88$953.62

10% off
SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male

SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male

$120.76$134.18

31% off
10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino 10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino

10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino

$11.16$16.17

4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power 4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

$8.89$8.89

50% off
4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power 4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

$59.21$118.43

7% off
Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$3.13$3.38

TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V

TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V

$1.37$1.37

36% off
12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$9.95$15.55

36% off
16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino 16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino

16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino

$10.86$16.97

33% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.35$18.43

52% off
DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board

DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board

$11.35$24.14

32 sold
35% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.30$18.92

37% off
HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A

HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A

$7.89$12.52

ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway

ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway

$6.32$6.32

11 sold
20% off
16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$11.36$14.20

6% off
16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$10.08$10.75

32% off
20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW 20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW

20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW

$17.90$26.33

64% off
Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System

Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System

$30.34$84.29

24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards 24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards

24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards

$22.10$22.10

40% off
2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors 2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$5.75$9.58

54% off
DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled

DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled

$88.27$191.90

1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger 1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger

1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger

$6.52$6.52

28% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.45$17.29

37% off
ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control

ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control

$14.65$23.26

20% off
High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank

High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank

$4.78$5.97

8% off
UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP

UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP

$158.00$171.74

Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board

Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board

$5.91$5.91

40% off
1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V 1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V

1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V

$29.84$49.73

12% off
2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels 2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels

2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels

$147.88$168.68

2 sold
41% off
GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay

GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay

$19.58$33.18

36% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.44$19.44

Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System

Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System

$5.65$5.65

6% off
UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101 UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101

UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101

$15.44$16.43

31% off
2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors 2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$5.69$8.25

28% off
2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger 2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger

2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger

$3.28$4.56

Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module

Taidacent 2pc Non-Contact Liquid Level Sensor Module Contactless Liquid Level Detection Switch Water Tank Level Indicator Module

$3.88 $3.88

Categories: Security & Protection, Building Automation

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48% off
HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact

HLK-LD7901B 79G Water Level Detection Sensor LD7901B Millimeter Wave Radar Sensor Module Non-Contact

$495.88 $953.62

Categories: Security & Protection, Building Automation

Buy Now
10% off
SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male

SMA High Frequency Test Cable SS405 Line 18GHZ Super Flexible Line SMA Connector Test Level SMA Male

$120.76 $134.18

Categories: Security & Protection, Building Automation

Buy Now
31% off
10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino 10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino

10PCS Relay Module With Optocoupler High Or Low Level Trigger Expansion Board For Raspberry Pi Arduino

$11.16 $16.17

Categories: Security & Protection, Building Automation

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4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power 4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

$8.89 $8.89

Categories: Security & Protection, Building Automation

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50% off
4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power 4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

4 Channel 20A Relay Control Module High / Low Level 8Ch Controller For UNO MEGA2560 R3 Raspberry Pi B+ Power

$59.21 $118.43

Categories: Security & Protection, Building Automation

Buy Now
7% off
Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$3.13 $3.38

Categories: Security & Protection, Building Automation

Buy Now
TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V

TTL Turn To RS485 Module Hardware Automatic Flow Control Module Serial UART Level Mutual Conversion Power Supply Module 3.3V 5V

$1.37 $1.37

Categories: Security & Protection, Building Automation

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36% off
12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$9.95 $15.55

Categories: Security & Protection, Building Automation

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36% off
16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino 16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino

16 Channel 12V Relay Module With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi Arduino

$10.86 $16.97

Categories: Security & Protection, Building Automation

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33% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.35 $18.43

Categories: Security & Protection, Building Automation

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52% off
DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board

DC 5V 12V Automatic Water Level Controller Module Liquid Sensor Switch Solenoid Valve Motor Pump Water Tank Control Relay Board

$11.35 $24.14

32 sold

Categories: Security & Protection, Building Automation

Buy Now
35% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.30 $18.92

Categories: Security & Protection, Building Automation

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37% off
HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A

HW-883 1 Channel 5V Low Level Solid State Relay Module With Fuses Solid State Relay 250V2A

$7.89 $12.52

Categories: Security & Protection, Building Automation

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ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway

ZigBee 3.0 Water Leakage Sensor Flood Alarm Water Level Overflow Detector Smart Security System Work with eWeLink Zigbee Gateway

$6.32 $6.32

11 sold

Categories: Security & Protection, Building Automation

Buy Now
20% off
16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$11.36 $14.20

Categories: Security & Protection, Building Automation

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6% off
16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi 16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

16 Channel 12V Relay Module Expansion Board With Optocoupler Low Level Trigger Expansion Board For Raspberry Pi

$10.08 $10.75

Categories: Security & Protection, Building Automation

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32% off
20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW 20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW

20A Relay Control Module High / Low Level 8Ch Controller 5V For UNO R3 Raspberry Pi 3 B+ BEW

$17.90 $26.33

Categories: Security & Protection, Building Automation

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64% off
Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System

Remote Monitor Overflow Level Water Leak Sensor Wifi Tuya Water Leak Detector Smart Sound Alarm Water Alarm Security System

$30.34 $84.29

Categories: Security & Protection, Building Automation

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24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards 24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards

24V High/Low Level Trigger 16-Channel Relay Module Isolated 16-Channel Relay Control Module Interface Boards

$22.10 $22.10

Categories: Security & Protection, Building Automation

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40% off
2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors 2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$5.75 $9.58

Categories: Security & Protection, Building Automation

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54% off
DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled

DIY Retro Level Indicator LED Music Spectrum LED Audio Level Indicator Pick-Up Rhythm Light Voice Controlled

$88.27 $191.90

Categories: Security & Protection, Building Automation

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1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger 1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger

1 Piece 5V Optocoupler Drive Module Eight-Way Relay Control Board Low Level Trigger

$6.52 $6.52

Categories: Security & Protection, Building Automation

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28% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.45 $17.29

Categories: Security & Protection, Building Automation

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37% off
ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control

ZigBee Water Leak Detector Flood Sensor Flood Overflow Alert Security Alarm System Tuya Smart Life App Remote Control

$14.65 $23.26

Categories: Security & Protection, Building Automation

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20% off
High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank

High Mid Low Level Indicator DC 12V Water Liquid Level Controller Sensor Switch Relay Module For Motor Fish Tank

$4.78 $5.97

Categories: Security & Protection, Building Automation

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8% off
UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP

UOTEK Industrial Grade RS-232 to CAN BUS Level Converter Canbus to RS232 Adapter UT-2501 Connector Half Duplex 300BPS-115.2KBP

$158.00 $171.74

Categories: Security & Protection, Building Automation

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Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board

Water Level Controller Module 12V DC Water Level Detection Sensor Automatic Liquid Control Switch PCB Board

$5.91 $5.91

Categories: Security & Protection, Building Automation

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40% off
1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V 1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V

1PCS 150mm Stainless Steel Float Switch Tank Liquid Water Level Sensor 220V

$29.84 $49.73

Categories: Security & Protection, Building Automation

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12% off
2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels 2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels

2-branch Hall water flow sensor small intelligent toilet water purifier flow meter pulse signal output high and low levels

$147.88 $168.68

2 sold

Categories: Security & Protection, Building Automation

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41% off
GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay

GRL8 Water Level Controller Liquid Relay 10A AC DC 24V 220V Wide Range Voltage Water Pump Relay

$19.58 $33.18

Categories: Security & Protection, Building Automation

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36% off
2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel) 2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

2PCS Relay Module With Optocoupler High/Low Level Trigger For Arduino (12V Relay 8 Channel)

$12.44 $19.44

Categories: Security & Protection, Building Automation

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Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System

Water Level Alarm Water Leakage Detector Overflow Alarm Full Water Alarm 120 DB Security Alarm System

$5.65 $5.65

Categories: Security & Protection, Building Automation

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6% off
UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101 UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101

UOTEK Industrial Grade RS-485 Lightning Arrestor Arrester RS485 Isolator Module ESD Surge Protector Level 4 IP30 5KA UT-S101

$15.44 $16.43

Categories: Security & Protection, Building Automation

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31% off
2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors 2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

2X Xh-M203 Full Automatic Water Level Controller Pump Switch Module Ac/Dc 12V Relay Sensors

$5.69 $8.25

Categories: Security & Protection, Building Automation

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28% off
2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger 2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger

2 PCS 5V One Channel Relay Switch With Optocoupler Isolation Support High Low Level Trigger

$3.28 $4.56

Categories: Security & Protection, Building Automation

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