2 z-wave plus water LS100 leak alarm sensor with remote prob water resistance (BRAND NEW) sensors have been fully tested. No box, batteries are not included. Battery type (CR2 3v)

The device is designed to detect water leaks anywhere in the house such as bathroom sinks, kitchen sink, water heater, indoor AC units, mostly anywhere you can get water damage. Has 3 brass telescopic pins that can detect water on both hard floors (tiles) and soft carpets.

When an alarm is active, the unit emits a sound and a red LED flash.

If needed How to reset water sensor.

Next to the battery there's a black button to reset. Press the black button for 20 seconds the indicator light turns on then let go of black button. light will flash four times then you're all set.

https://community.smartthings.com/t/st-edge-z-wave-sensor-driver-channel-including-specific-ecolink-fortrezz-homeseer-monoprice-and-zooz-models/248133/225

https://fccid.io/Z52NAS-WS02Z/User-Manual/15-NAS-WS02Z-UserMan-US-r1-4384664.pdf