Harmony 5000 central unit CTG provides fully programmable, energy saving control for the GLAMOX heating range of radiators and thermostats, controlling heater output based on room occupancy and temperature requirements by radio signals. Radio range within normal buildings 25-35 meter. Also receives and transmits signals from GSMG.

Harmony Zonal Control - 24 Zones. Each of the 16 heating zones can be individually programmed for each hour of a 7 day period, switching heaters between Comfort and Economy temperature modes. Rest of 8 zones are suited to control household appliances and lights.

Central unit CTG could be mounted on wall and connected by plugging plug to to 230 socket or the GSMG unit.