Wired Infrared Motion SensorThe Visonic 360 Ceiling Dualtech motion sensor offers robust protection against theft. Simply mount this sensor in a cabin or above the main entryway, and receive notification in the event ofunauthorizedentry. The sensor can also be programmed to sound an audible alarm. Featuring a sleek, compact, and elegant design, the sensor blends seamlessly into any dcor. Visonic technology assures high reliability, false alarm immunity, and 360-degree coverage. Ideal for monitoring unexposed areas such as pilothouse, galley, cabin, etc.Specifications:Dimensions: 3.37in (diameter) 1in (depth)Ceiling MountRange: 360 detection pattern with floor coverage up to 36ftSupply Voltage: 9-12VNot recommended for use on weather/exposed decksWorks with MTC and Siren 3 Pro