SONOFF 4CHR3 & 4CHPROR3 DIY 4-Gang Wi-Fi Smart Switch with RF 433MHz RF Control
SONOFF 4CHR3 or SONOFF 4CHPROR3 1. SONOFF 4CHR3 or SONOFF 4CHPROR3 User Manual 1. For the device away from the switch, you can create a moveable space in virtue of a DIN rail to make them be connected.