Smart Switch Sonoff SPM-Main

Smart switch Sonoff SPM-Main

Smart switch Sonoff SPM-Main, which enables power consumption measurement and supports connectivity via both Ethernet and Wi-Fi.. It can handle up to 128 channels - you can connect it to a maximum of 32 SPM-4Relay switches (4 channels each), which are sold separately. Moreover, overload protection helps prevent damage to your devices. The product is also very easy to install.

Many applications

The SPM-Main switch is suitable for many different applications. With it, you can check, for example, how much electricity your tenants consume monthly, and you will also find out the energy consumption in a shopping center or office. The product will also be useful in a server room or cryptocurrency mining facility - the overload protection feature will help you avoid damaging specific devices.

Reliable signal transmission

Take advantage of the ability to connect devices. SPM-Main communicates with the cloud via Ethernet or Wi-Fi connectivity. It also connects to SPM-4Relay switches via RS-485, allowing for stable transmission over long distances. Connection issues are a thing of the past!

Power consumption meter

Do you want to check the changes in energy consumption in every room in the office? Or maybe you care about knowing how much electricity your tenants are using? Sonoff It's possible! The SPM-Main and SPM-4Relay switches allow for precise measurement of energy consumption. You can find all the information in the eWeLink app. This way, you can check the power consumption without leaving your home - just reach for your phone!

Overload protection

Increase security in the server room and don't worry about damaging your devices. The switch offers an overload protection feature. When you activate it, the equipment will be automatically turned off when the current, voltage, or power reaches the specified value in the application. A load delay function is also available.

It will support up to 128 channels.

One SPM-Main module can control up to 32 SPM-4Relay switches. Moreover, each SPM-4Relay offers 4 independent channels with a maximum load of 20 A each. This means that SPM-Main can handle up to 128 channels! This makes it ideal for use in apartment buildings, allowing for monitoring of energy consumption by tenants in rented apartments.

Additional amenities

You can now save the energy consumption measurement history from the last 180 days. The switch is equipped with an SD card slot (8-32 GB, SDHC). This allows you to conveniently export data and gives you the confidence that you won't lose any important information. Installing the SPM-Main and SPM-4Relay switches will also not be a problem for you. You can easily mount them on a DIN rail. Note: the SD card is not included in the package.

Specification