Description
Sonoff SPM 4Relay Stackable Power Meter
- Connect up to 32 SPM-4-Relays: Each Sonoff SPM 4Relay has 4 isolated channels to help you manage devices more conveniently. Note: SPM Main Unit must be used with at least one Sonoff SPM 4Relay.
- Power Metering: The Sonoff SPM 4Relay can monitor the power consumption by checking the eWeLink app on your mobile phone. Obtaining current, voltage and power easily.
- Max. 20A/Gang: Each channel can support a maximum current of 20A, without fear of high power load.
- Communicated by RS-485: The SPM-Main communicates with the SPM-4Relay via RS-485, which enables multi-terminal and stable long-distance data transmission.
- Overload Protection: Once the overcharge protection is activated, it protects your device from burns.
