A DIN-Rail Compatible, Stackable Relay with up to 20A Per Channel Max. Capacity. One SONOFF SPM-Main Power Meter can be connected to 32 SPM-4RELAYS. The SPM-MAIN communicates with the SPM-4RELAYS through RS-485. SPM MAIN UNIT is sold separately.
SPM 4-Relay Unit
Features
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.
Specifications
Model : SPM-4Relay
Color : White
Shell material : PC V0
Input : 100-240V ~ 50/60Hz 20A/Gang 80A/Total Max
Output : 100-240V ~ 50/60Hz 20A/Gang 80A/Total Max
Elevate your smart home setup with the SONOFF SPM-4 Relay, a stackable DIN-Rail compatible relay that supports up to 20A per channel. Effortlessly manage up to 32 devices and monitor power consumption via the eWeLink app, ensuring efficiency and safety with overload protection. Enjoy seamless communication and control for a smarter, more connected lifestyle.
