Hot!!! wireless smoke detector 315M/433M with 9V battery

Specifications:
Material: ABS plastic
Power supply: 9V DC battery
Quiescent current: 8μA
Alarm current: 16mA
Operating temperature: -10°C ~ +50°C
Usage: Home,office,hospital,school,commercial area,public area,etc
Alarm decibel: Louder than 85dB at 10feet(3 meters)
Test button: To verify the proper functioning of smoke alarm
Monitoring area:20 m2 

Technical Parameter:
Power supply:9V DC battery
Static current :≤10μA
Alarm current:16mA
Humidity: 0-95%(40±2°C),no condensing or icing
Quiescent current:8μA
Operating temperature:-10°C ~ +50°C
Alarm decibel ≥85dB at 10feet(3 meters)
Test button:To verify the proper functioning of smoke alarm
Alarm ouput:Sound & flash alarm
RF Frequency:315M or 433M