Sonoff SPM-4Relay 20A Wifi Smart Switch
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Note : The Main Unit and 4-Relay of the Stackable Power Meter need to be used together. The Main Unit is connected to at least one 4-Relay in order to function
Max. 20A/Gang.Each channel can support maximum current of 20A, no fear of high power load
Communicated by RS-485.The SPM-Main communicates with the SPM-4Relays through RS-485, which allows for multi-terminal and stable long-distance data transmission
Overload Protection.Once the overload protection is enabled, it can protect your devices from burning out.- Model : SPM-4Realy
- Input : 100-240V AC 50/60Hz 20A /Gang 80A/Total Max
- Output : 100-240V AC 50/60Hz 20A /Gang 80A/Total Max
- Color : White
- Material : PC V0
- Dimension : 250X90X66.5mm