DIN Relay Control - 4-Channel Relay - SPM

Sonoff SPM is a modular system consisting of a main controller and can be expanded with this 4-channel DIN relay. SPM-Main supports up to 32 of these DIN relays, allowing you to control a total of 128 relay ports!

Each relay has power measurement and data is stored locally for up to six months (requires an SD card).

The main unit connects directly to your WiFi or with an Ethernet cable. The relay units are connected in series with the main unit using the included cables and can be replaced with longer ones if needed.

Easily paired with the eWelink app available for Android and iOS. It can also be paired with the built-in web server and a web browser.

It is useful for central control of devices in homes, but can also be used in industries for larger installations or in rental buildings, for example, to monitor individual consumption in apartments.

This device belongs to Sonoff's DIY segment, which means that you can replace the software to run, for example, Tasmota on it. You can also write your own software in Arduino to control and monitor the relays.