D-Link Wi-Fi Water Sensor Add-on, Long Range Battery Powered, Compatible Only with DCH-S1621KT, Whole Home with App Notifications (DCH-S163)

Add-On. With the required DCH-S162 Water Leak Sensor Master Unit, sold separately, connect up to 16 Pods throughout your home as its low-profile design makes discreet, remote placement possible such as under a washing machine, water heater, or bathroom sink. Easy-to-use, this DIY smart home solution provides multi-alert notifications (audible, visual, mobile) via the devices and mydlink App when water is detected. The DCH-S163 water sensor pod comes equipped with two pre-installed AAA batteries for up to 5 years of battery life so you have peace of mind even when away.