Passive infrared detector Operating 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