Other leak sensors on the market require running wires or drilling holes, the Insteon Leak Sensor is an all-in-one design. This makes it super simple to install and ideal for placing in tight areas.
A battery comes included with the Insteon Leak Sensor and will provide over 10 years of operation. To add a level of security, the sensor also features a "heartbeat" signal which is sent daily. This can be used by central controllers and/or cloud services to notify you that the sensor is still functioning or in the absence of the signal that there is a problem.
Start with one, grow to dozens if you wish. Insteon also offers motion and open/close (door/window) sensors.