Sonoff SPM-MAIN

The SPM-MAIN is the main unit required to interact with the SPM-4RELAY relay units.
The SPM devices are great stackable power measurement devices for especially usage in bigger building like malls or at offices.

  • Power measurement (current, power, voltage) and switch to easily build in a fuse box
  • DIN-rail compatible
  • Do not use this device as safety fuse!
  • Stackable up to 32 SPM-4RELAY units of each 4 relays (so 128 channels in total)
  • Requires at least one 4-gang relay unit (SPM-4RELAY)
  • Connectable over either WiFi or Ethernet (!)
  • SD-card slot for automatic power usage history storage (8 – 32 GB SDHC card supported, not included). Can be read through HTTP API

NotEnoughTech has reviewed the Sonoff SPM: https://notenoughtech.com/home-automation/sonoff-spm/

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The SPM-MAIN is the main unit required to interact with the SPM-4RELAY relay units.
The SPM devices are great stackable power measurement devices for especially usage in bigger building like malls or at offices.

  • Power measurement (current, power, voltage) and switch to easily build in a fuse box
  • DIN-rail compatible
  • Do not use this device as safety fuse!
  • Stackable up to 32 SPM-4RELAY units of each 4 relays (so 128 channels in total)
  • Requires at least one 4-gang relay unit (SPM-4RELAY)
  • Each channel of the SPM-4RELAY unit supports a maximum of 20A
  • Connectable over either WiFi or Ethernet (!)
  • RS-485 communication between main unit and SPM-4RELAY units
  • SD-card slot for automatic power usage history storage (8 – 32 GB SDHC card supported, not included). Can be read through HTTP API.
  • Supported features:
    • LAN mode
  • Supported third parties:
    • Unknown
Dimensions 143 × 90 × 67 mm
Brand

WiFi standard

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Power supply

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Extras

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Manufacturer

Manufacturer: ITEAD

Website: https://itead.cc

Product webpage: https://itead.cc/product/sonoff-smart-stackable-power-meter/

Verified sellers

Verified sellers are trustworthy sellers of which we believe you can safely buy your goods at. We had either good contact with a Verified seller or (heard of) good experiences in delivering ordered goods and / or aftersales. Purchase buttons of Verified sellers end with a few codes with brackets starting with “[V”. [More info]

Verified sellers for this product

  • ITEAD STUDIO
  • eWeLink Store

Manual

Device manual: https://sonoff.tech/product-document/diy-smart-switch-doc/spm-main-spm-4relay-doc/

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