Water Sensor

Detects water and other conductive non-flammable liquids. Compatible with all ControlByWeb products with a digital input.


Prevent undetected water damage from leaking pipes and water heaters. Using no mechanical parts, the GRI Water Sensors are triggered by a moisture bridge across the sensor contacts. The GRI Water Sensors can be installed to detect a layer of water as minute as 1/16 of an inch in depth.

Connected to a ControlByWeb product's digital input, the GRI water sensor has a 'normally closed' circuit meaning that 5 Volts passes through during normal conditions (no water detected). During this normal condition, the ControlByWeb product's digital input will be 'on'. Once water is detected, the GRI water sensor will open its contact and stop sending voltage to the ControlByWeb product. At that point, the digital input will then turn 'off' and the product can send an email/text alert and/or trigger a relay in a local or remote location.

For more information about the GRI-2605, please see the Water Sensor Users Manual

The Water Sensor is compatible with all ControlByWeb® products that have a digital input.

ControlByWeb Products | Water Sensor Wiring Diagram

Water sensor wiring diagram

This wiring is accurate for most Control by Web products. Wiring may vary for certain products


  • Will Detect Any Conductive Non-Flammable Liquid
  • Automatic Reset
  • 6 Foot Jacketed Lead Standard
  • Detects liquids of 1/16" in depth

  Compatible Products

Water Sensor (6ft)

In Stock



Power Range/Current

5 VDC/10mA



Please contact our sales department for quantity discounts.


*This sensor is water resistant and is not rated for long-term submersion.