The Dotworkz D2 Ring of Fire™ heated interior system prevents cameras from freezing in climates down to -40° F (-40° C), now with MVP to work with all input and camera voltages. Extreme cold takes extreme measures — count on the one and only D2 enclosure with Ring of Fire thermal protection. Dotworkz Ring of Fire™ features patented de-icing/defrosting circuitry that removes snow and ice that would obstruct the camera's view. Features: Rated protection down to -40° F; IP and analog PTZ camera compatible; Thermostatically controlled De-Icing and Heating element; Virtually indestructible Polycarbonate Thermal Plastic alloy; Internal bracket included for perfect fit for PTZ, megapixel or mini domes; Switchable upper and lower camera mounting locations for maximum versatility and internal storage space; Internal mounting space for: routers, cell networks, hard drives, UPS, WiMAX, mesh hardware, etc.; IP66 rated against dust, water and salt water air & IP68 water proof connection ports.