Sonoff 4CHPRO R3 Smart Switch

• Independently/Mutual Control 4 Devices: Sonoff 4CHPRO turn on/off the 4 connected devices separately in self-locking mode. Turn on 1 device but turn off the other 3 devices at the same time in interlock mode. Turn on the connected devices but automatically switch off after 0.5-3600s later in inching mode.
• Dry Contact: If your device does not need to be powered through the output of the 4CHPROR3, but only needs to use it as a smart switch to control the line on and off, the 4CHPROR3 is your best choice.
• Easy To Out-of-Reach Devices: Sonoff 4CHPRO mounted on the guide rail, convenient to connect and control devices far from the switch.
• Works With Alexa & Google Assistant: You can directly ask Amazon Echo, Google Home to turn on/off your Sonoff 4CHPRO devices.
• With 433MHz RF Control: Use Sonoff Remote Controller RF433 R2
  to turn on/off the Sonoff 4CHPRO without internet.