HON T4039M1004 HEAT/COOL THERMO

Control line voltage valves of a fan coil unit in cooling, manual or automatic changeover heating-cooling systems. Directly operate one or two valves. Positive deadband separates heating and cooling circuits in automatic models. Includes allen wrench for cover and mounting screws. Differential temperature; the differential from make of one contact to make of the opposite contact is 7. F maximum with a positive deadspot. No display, 4 inch square outlet box or 2-ganged outlet box mounting.