Water Leak Detector

This industrial-grade water leak detector is IP66 rated, featuring waterproof, dustproof, and robustness. When detects a leakage, it will be triggered to turn on the alarm system or shut down the equipment, to ensure safety, lower risks and minimize damages. It's suitable for using in kitchens, bathrooms, and sump pumps etc.

In stock
  • 10+: $24.00



Please send email to sensecap[at]seeed[dot]cc to request any technological support for this product.

Water leakage might destroy our properties at home and workplace, and potentially cause monetary loss and health risks. It's essential to be alert when there is a leakage to make sure actions are taken to minimize risks and avoid damages.

This Water Leak Detector is designed with industry standards. It's IP66 rated, featuring waterproof and dustproof, can be widely used in various application scenarios, such as a kitchen, a sump pump, and a bath, etc, just to name a few.

It is designed to detect water leakage. When the water immersion level touches the sensor probe, the built-in relay will be triggered to turn on the alarm system or shut down the equipment in the house. The control circuit has a very low potential energy, so it won't cause any ignition of flammable or combustible materials, ensuring safety.


  • User-friendly: easy to install, clean, and remove.
  • Widely-applicable: Relay signal output, it can be used with digital displays, PLCs, inverter, recorder and other water detection system
  • Robustness: made of high-quality alloy and waterproof cable, durable for long-term use 
  • High-performance: strong anti-interference and long-term stability


Power Supply 5V
Operating Current < 30mA
Quiescent Current < 10mA
Output Signal

watery: relay connection,

dry: relay break

Cable Length 2 meters
Relay Load (3A 250V AC) / (3A 30V DC)
Response Time < 50ms
Measurement Medium water
Operating Temperature -5℃ ~ +60℃
IP Rating IP66
Device Weight 200g


  • In the basement where groundwater leakage could cause damage
  • At the entrance of a low-lying door, where there is a risk of flooding
  • In the bathroom where a bucket or sinks could overflow
  • Near water heater, refrigerator, dishwasher or washing machine
  • Other water detection system

Wiring Diagram

Please refer to the pin information below:

  • Red wire and brown wire ---- VCC+ and VCC-
  • Yellow wire ---- Relay common pin
  • Blue wire ---- Relay normal closed pin
  • White wire ---- Relay normal open pin


•  The probe pole of the sensor is placed facing down to the ground vertically. The sensor should be placed in the lower spot in the flat area.

•  If you need to detect a small amount of water (not to a certain depth), it's a good practice to place a sponge tray under the probe.


HSCODE 9033000090
USHSCODE 9030390100





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