SD-13P 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：(φ?H）:112 X 40 (mm) HOUSING: ANTIFIRE ABS CE approved.