SONOFF SPM Main Smart Stackable Power Meter (Main Unit)

SONOFF Smart Stackable Power Meter SPM-Main

• Connect up to 32 SPM-4Relays One SPM-Main can be connected 32 SPM-4Relays. Each SPM-4Relay has 4 isolated channels to help you manage devices more conveniently.
• Power metering :You can monitor the power consumption by checking eWeLink App on your mobile phone. Obtaining current, voltage and power easily.
• 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.
• 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 to function.

Specifications