... (3 digitals);4.Three LEDS to indicate different status: power supply(green), alarm(red), fault(yellow);5, Circuit and sensor fault signal ... .Test/Hush/Reset Button with 3 LEDS 7. Low Battery alarm (alarm,LCD display $ LED indication)8, Can not be fitted ... technology for environmental friendly;3. Power Supply: 4.5V Alkaline Battery;4. Standby Current: 6uA;5. Alarm Current: 23mA;6. Operation Temperature ...