Sonoff Stackable Power Meter realizes smart management with overload protection, metadata monitoring and electricity statistics.
In addition, you can also activate the overload delay to avoid spurious triggering. One SPM-Main can be connected with up to 32 SPM-4Relays.
However each channel can support maximum current of 20A, thus no fear of high power load.
**Note : You need to use the SPM-Main Unit as well as the SPM-4Relays of the Stackable Power Meter 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