YS7906
Water Leak Sensor 4
4.7617 reviewsWater Leak Sensor 4 detects drips from above with its top electrodes and pooling water below with its bottom electrodes. When enabled, its built-in sounder gives a local leak alert. A configurable low-temperature warning helps flag conditions that may lead to freezing.
A YoLink hub is required for app alerts and full functionality.
For indoor use. Do not place where the sensor stays in water or is frequently submerged.
Product details
Water Leak Sensor 4 detects drips from above with its top electrodes and pooling water below with its bottom electrodes. When enabled, its built-in sounder gives a local leak alert. A configurable low-temperature warning helps flag conditions that may lead to freezing.
Specifications
- Power source
- 2 × non-rechargeable alkaline AAA batteries per sensor
- Ingress rating
- IP66
- Operating temperature
- 32–122°F (0–50°C)
- Operating humidity
- up to 100% RH, non-condensing
- Dimensions
- 62 × 62 × 28 mm (2.44 × 2.44 × 1.10 in)(L × W × D)
What’s in the box
Explore Sensor 4
Catch water from above or below.
Detect drips at the top contacts and pooling water underneath. Hear the enabled local sounder, get configured app alerts through an online hub, and add a compatible valve for automatic water shutoff.

Two ways to catch a leak.
The upper contacts catch falling water while contacts beneath the sensor detect a puddle forming below. Put the sensor where water is likely to reach it.
- Local warning when the built-in sounder is enabled.
- Configured phone alerts through an online YoLink hub.
- Automatic shutoff with a compatible valve paired in advance.
Hub and compatible valve sold separately. Configure and test notifications and the paired response before use.
Manuals & support
Shipping, returns & warranty
Returns
60-day returns from delivery. Customer-paid return shipping; condition and restocking terms apply.
Return policy