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: