Product Description : 

• Brand Name: SONOFF
• Camera Equipped: No
• State of Assembly: Ready-to-Go
• Model Number: 433mhz RF Bridge,Sonoff Door Sensor
• Compatibility: All Compatible
• Sonoff RF Bridge Max: 4 pieces of 433Mhz remote control
• Gyro: 433Mhz remote control replacer
• Max Channel: 16 channels
• Model Number: Sonoff Door Sensor,Pir Sensor,Sonoff RF 433 bridge
• Wireless Stardard: Wi-Fi 2.4GHz
• Operating Voltage:: 3.0 ~ 3.6V
• Frequency: 433MHz
• Supports app:: IOS Android System, Works with Alexa & Google Home
• Alpplication:: Home, Office, Sonoff RF Bridge 433 MHz
• Power Supply:: USB 5V