Fabman Power Monitor for Fabman Bridge V1
This article is compatible with the V1 standard version of the Fabman Bridge only and must be installed by a qualified electrician. The V1 plus version as well as V2 are equipped with a power monitor by default.
The Fabman Power Monitor enables you to determine the equipment status (busy or idle) based on the power consumption of the connected machine.
Go here for details and installation instructions.