Home security fire alarm system DC9V Battery Operated smoke alarm detector

What is the smoke gas detector used for:

Smoke alarms detect fires by sensing small particles in the air using a couple of different kinds of technologies. Once they detect those particles above a certain threshold, they signal the alarm to sound so that you and your family can get to safety and call the fireman. Smoke alarms save lives.

Technical data

1.Unit Size:Φ140X41mm

2.Working Current:

1-Static Current: ≤10μA

2-Alarm Current: ≤12mA

3.Operation Voltage: DC 9V Battery

4.Alarm Sound: ≥85dB(3m)

5.Ambient Temperature: -10°C-+60°C

6.Ambient Humidity: ≤95%RH

7.Sensor: Optical

8. Low Battery Alert Remain: 7-15 days

9.Certificate:EN14604 & CE & RoHS Approval