AU-95SD PHOTOELECTRIC SMOKE DETECTOR Ceiling Mount Wired Network Output Alarm Output: NC/NO LED Indicator Low Battery Warning Self-test Button Power: DC12V or DC24V Current: Stand By: 3mA, Alarming: 30mA Working Temp?-10°C ~ +50°C Working Humidity??90% RH Size?(??H?:112 X 40 (mm) Housing: Antifire ABS