TECHNICAL SPECIFICATIONOperating Voltage:DC 9-16VStatic Current:≤30mA Operating Temperature:-10℃ to +50℃ Installation Method:ceiling mountedInstallation Height:approx 2.5-6mDirection Identification:Enter from outside: alarmExit from inside: without alarmDetection Angle:15?Detection Range:diameter 6m / height:3.6mAlarm Output:Normal CloseAnti Tamper Switch:Normal Close Size:102.5 *83*27mm