SONOFF Wi-Fi SPM-Relay Smart Stackable Power Meter | SPM-Main Required

SONOFF Wi-Fi SPM-Relay Smart Stackable power meter is increasingly essential for businesses and property owners who want reliable smart energy management. Sonoff Stackable Power Meter offers a practical and scalable system for monitoring electricity consumption in real time. Since it communicates with the cloud using either WiFi or Ethernet, you can manage every connected relay easily by using the eWeLink app. Through this app, it becomes possible to track the electricity usage of each individual tenant or device by simply checking your mobile phone. This way, you no longer need to be physically present in the facility to observe power consumption trends.

In addition, this stackable power meter allows you to connect one SPM-Main to up to thirty-two SPM-4Relays. Each SPM-4Relay contains four completely isolated relay channels, and each individual channel supports up to 20A. Because of this isolated structure, each tenant in a large mall or building can have separate and accurate metering. Moreover, the RS-485 communication method delivers highly stable and long-distance connections between the SPM-Main and the relays. Also, the cloud connection ensures fast updates and exceptionally dependable synchronization at all times.

Besides the power metering function, overload protection is also available and completely configurable. As a result, you can avoid potential safety risks and protect important appliances. Even more conveniently, the delay for overload activation can be customized to prevent false alarms. To make everything even more efficient, the system can store up to one hundred and eighty days of detailed energy usage records locally using an SD card. This information can then be retrieved through the HTTP API whenever needed. Because this valuable data is always available, it remains easy to optimise energy usage across all areas and reduce unnecessary energy waste. In short, this reliable smart management solution helps maintain safety, reduce downtime and improve operational control without any complexity.

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