Rialco Flood Alarm 3 PACK 11" flexible sensor arm that can be easily bent into small, awkward spaces Quality-built and made of heavy-gauge, durable ABS plastic Operates on (1) 9 volt battery--Included, that sounds a shrill horn when water contacts the sensor Comes with mounting bracket/screws for easy installation, or am can be bent to self-support the unit You will receive (3) Flood Alarms by Rialco