Sonoff SPM-Main - Wi-Fi Smart Stackable Power Meter - Main Unit

With the Sonoff Smart Stackable Power Meter system, up to 32 SPM-4Relay modules can be connected to this Main Unit. The Main Unit is controlled via Ethernet or Wi-Fi, then via RS485 the Main Unit controls the relay modules and reads the power consumption of each relay channel. Energy consumption data can also be stored on a microSD card (not included). The Main Unit can be controlled with Android or iOS with the eWeLink app, and is also compatible with Amazon Alexa, Google Assistant, IFTTT and Google Nest. The device is easy to mount on a DIN rail.

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