Description
One SPM-Main can be connected 32 SPM-4Relays. Each SPM-4Relay has 4 isolated channels to help you manage devices more conveniently.
You can monitor the power consumption by checking eWeLink App on your mobile phone. Obtaining current, voltage and power easily.
Each channel can support maximum current of 20A, no fear of high power load.
The SPM-Main communicates with the SPM-4Relays through RS-485, which allows for multi-terminal and stable long-distance data transmission.
Once the overload protection is enabled, it can protect your devices from burning out.
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