Factory mounted control system to protect refrigeration system at elevated ambient temperatures. Required when inlet air to the condenser coil is above 38°C to a maximum of 49°C. Available in 10 m3 to 56 m3 capacities on WG40 Models. Check specific heat load before ordering any unit. WG40 models are suited for 50Hz (Europe, Australia, most of Asia, Africa); check locally if you don’t know your frequency.