Ultra Safety Systems A201 Ultimate high water bilge alarm. Loud 103 dB beeper signal. Recessed mount. Test/Mute switch enables easy check on system and battery level. Red LED indicator. All wires have adhesive sealed heat shrink wall wire connectors and includes mounting screws. 4-1/8H x 3W x 1-5/8D. Operating voltage: 18v.
9 volt batteries not included.