Accessory Type Programmable Radiator Controller Compatible with Product Type Standard Radiator Valves Includes Adapter(s) Base Plate Batteries Controller Display Holder Screws Pipe Connection Type Threaded Temperature Range 32 Degrees F to 122 Degrees F Material ABS Model Number HR90 Overall Height 2 3/8 in Overall Width 2 1/8 in Overall Depth 3 13/16 in Standards RoHS CE