The Johnson Controls T-4752-201 High Volume Horizontal Mount Pneumatic Thermostat is a non-programmable thermostat designed for HVAC systems. It operates on a 24V pneumatic power source and features a dial control style for adjusting the temperature. Made of aluminum, this wall-mounted thermostat is compatible with the Johnson Controls T-4752-201 model. It has a single heat stage and a temperature sensor technology for accurate temperature control. With a 1.97-inch display, this unit is backed by a 1-month manufacturer warranty.