Product code: 1017021

Sonoff's SPM-Main smart switch that enables measurement of power consumption. The device is the main component of a system consisting of SPM-Main and SPM-4Relay.

The device supports wired (RJ45 Ethernet port) and wireless Wi-Fi connectivity . The product is very versatile - it can support up to 128 channels. To do this, it should be connected to the SPM-4Relay switch (max 32 pcs).

SPM-Main is equipped with overload protection, which will avoid damage to your devices. In addition, thanks to the built-in microSD card reader, you can secure the history of energy consumption even from 180 days ago

The microSD card and SPM-4Relay are not included in the set - you can buy separately.

Key features:

• The SPM-Main switch has a variety of applications - it allows you to see how much electricity your tenants are using per month, the energy consumption of your office, among other things
• Protection of expensive equipment in the server room - the switch has overload protection.
• Connectivity of devices - SPM-Main communicates with the cloud via RJ45 Ethernet port or Wi-Fi.
• The connection to SPM-4Relay switches is through an RS-485 port, providing stable transmission over long distances.
• Supports up to 128 channels - One SPM-Main module allows you to connect and control up to 32 SPM-4Relay switches.
• Each SPM-4Relay offers up to 4 independent channels with a maximum load of 20 A each.
• This allows the SPM-Main to support as many as 128 channels.
• This is ideally suited for apartment blocks - it allows checking energy consumption in 128 apartments.
• Energy consumption history on a microSD card - The product allows you to save the history of energy consumption measurements from the last 180 days.
• The switch is equipped with a microSD card reader (8-32 GB, microSDHC).
• It gives you the ability to conveniently export data and the security of important information.

• Manufacturer: Sonoff
• Model: SPM-Main
• Color: White
• Input: 100-240 V ~50/60 Hz 50 mA max.
• Wi-Fi: 802.11 b/g/n 2.4 GHz
• Material: PC V0
• Dimensions: 142.5 x 90 x 66.5 mm
• Compatible microSD cards: 8-32 GB (microSDHC)