The Used Honeywell RTH111B1024 Digital Non-Programmable Thermostat is a reliable and efficient device for controlling your heating and cooling systems. With its digital control style and rectangular shape, this thermostat is easy to use and highly accurate in maintaining the desired temperature. It is powered by batteries and can be wall-mounted for convenient placement in your home. The model RTH111B also features a low battery indicator and a digital display, making it a user-friendly and practical choice for your energy management needs.