Type 4X heated cover helps protect sensitive devices against damage and the elements. Ideal for protecting a wide range of devices, components and sensitive units from vandalism and accidental damage as well as weather, dirt, dust and grime. Polycarbonate cover with key lock is designed to keep the enclosure at a temperature above freezing which allows the protected unit to be installed outdoors, in freezers, unheated warehouses or storage units. Designed to maintain temperature above freezing, operates on 12, 16.5 or 24 volts and has three thermostats.