Check the listing for details. FRIEDRICH RT7 Wired Thermostat,24VDC,Plastic,White 54ZV40. Condition: New. Listed at 149.59 USD. Wired Thermostat, 24V DC, 2 1/8 in Overall Depth, 5 11/16 in Overall Height, 7 9/16 in Overall Width, Number of Cooling Stages - Conventional System 1, Number of Cooling Stages - Heat Pump System 1, Number of Heating Stages - Conventional System 1, Number of Heating Stages - Heat Pump System 1, Maximum Control Temperature 90 Degrees F, Minimum Control Temperature 45 Degrees F Thermostats sense temperatures within a room and automatically turn air conditioners on and off based on temperature setpoints. They have a sensor that monitors temperatures and a control panel for adjusting the setpoints. They're typically mounted on an inside wall.Wall air conditioner accessories protect wall-mounted AC units from damage, aid their installation, and provide control of their operation. They're used f.