Sonoff 4CH PRO R3 4 Channel Din Rail Mounting Smart Switch Automation Timer

Sonoff 4CHR3 or Sonoff 4CHPROR3 User Manual 1. Sonoff 4CHR3 or Sonoff 4CHPROR3 1. Power on state allows users to set the On/Off/Keep status for the connected device before power failure and ensure it remains the arranged status after power restoration.

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