Model Number: smoke sensor 670
Type: Smoke Detector
Note: Need work with sonoff bridge
Function 1: TISHRIC Wireless Smoke Sensor Detector 433mhz Fire Alarm System
Function 2: Fire Alarm System Security works with Sonoff Bridge
Function 3: works with Sonoff Bridge Wifi Google/Smart Home Alexa
Power Supply: DC9V 6F22 (Battery not included)
RF Frequency: 433.92
Transmitting protocol: 1527
Wireless Transmission Distance: 150M(open air), need alarm host
Sounder level: 85dB
Low voltage Alarm: 6.8V
Working area: 60 square meters
Installation height: 6M