The SmartWise Smoke Sensor R2 is a wireless smoke detector that uses a photoelectric sensor to detect smoke indoors and sends an alarm signal to your mobile phone via the Sonoff RF Bridge or the SmartWise RF Bridge. Through its connection to the eWeLink Cloud, it can control other compatible Sonoff and SmartWise devices with eWeLink.

Product Features:

• Equipped with an RF transceiver at 433.92 MHz
• Provides a sound alarm (85dB) which can also be sent to the phone via RF connection with the eWeLink app
• Includes wall adapter and 2 screws for ceiling mounting
• Easy installation without wiring
• Wireless RF frequency: 433.92MHz
• Compatible with Sonoff RF Bridge and SmartWise RF Bridge (compatible with the eWeLink app)
• Application: indoor use only
• Room size: approximately 20 square meters
• Standby current: ≤ 10μA
• Alarm current: ≤ 100μA
• Alarm indication: sound alarm and LED flashing
• Sound level: 90dB/3m
• Operating temperature: -10°c ~ 50°c
• Operating humidity: ≤ 95%
• Power supply: 1 x 9V battery (not included)