Sonoff 4CH Pro R2 Smart Switch, Interlock Switch for Generator, Inching/Self-locking WiFi & RF Wireless Switch 90~250V

Buy offer Details

Independently control 4 devices] : It is the new 4-channel design which can make you remotely turn on/off 4 home appliances independently. 
 [3 powerful working modes] : Turn on/off the 4 connected devices separately in self-locking mode. Turn on 1 device but turn off other 3 devices at the same time in interlock mode. Turn on the connected devices but automatically switch off after 1-16s later in inching mode. 
 [2 remote control methods for your choose] : you can turn on/off the connected lights/appliances via WiFi or 433MHz RF Remote control.