WM15 is a power analyzer for single-, two- and three-phase systems. Depending on the model, WM15 is equipped with a static output (pulse or alarm), with a static output and a Modbus RTU communication port or with a static output and a M-Bus port. The self-powered version can be installed on systems up to 415 V L-L (400 V L-L for MID models), while the version with auxiliary power supply can be installed on systems up to 600 V LL.