The 4Relay is the required unit which works using the SPM-Main unit. Minimum 1 SPM unit is requierd per 32 SPM-4Relays
The SPM-Main communicates with the cloud through Ethernet or WiFi, and communicates with the SPM-4Relays through RS-485, which allows for multi-terminal and stable long-distance data transmission.
**Note : The SPM-Main Unit and 4-Relay of the Stackable Power Meter need to be used together. The Main Unit is connected to at least one 4-Relay to function. Scenes are not supported yet.
Icasa approved
NRCS Application currently in progress.
NRCS TA application number: SR #1-106756767