Wired Micro ePIR Motion SensorThe Micro ePIR motion sensor provides similar functionality as the Visonic Duo 240 Ceiling Dualtech in the most compact and hard to detect package available. An ideal solution for monitoring a boat's main entryway or corridor. Install on any wall or bulkhead for a well concealed layer of security. The sensor will push an alert to the boat owner upon unauthorized entry and can be programmed to sound an audible alarm. Specifications:Dimensions: 1.75in (diameter) 2.5in (depth) 6in (wire)Flush mount (2.5in depth behind mounting point)Range: 25ft/50degAdjustable backing plateSupply Voltage: 9-12VNot recommended for use on weather/exposed decksWorks with MTC and Siren 3 Pro