Programmable Thermostat

This versatile 7-day programmable electronic thermostat serves as a reliable replacement for the Resideo TH140-28-01-B/U and compatible models, offering dependable temperature control for 1-stage heat systems across diverse applications. Engineered for both residential and light commercial installations, this unit accommodates line voltage operation at 24, 120, and 240 VAC, as well as low voltage, millivolt, and hot water heating systems including baseboard heaters, convectors, radiant systems, and circulators. Powered by two standard AA/LR6 alkaline batteries rated at 1.5V each, the thermostat features a convenient low battery indicator with a 60-day advance warning to prevent unexpected shutdowns. The device delivers robust switching capacity with maximum resistive load ratings of 5A at 240 VAC or 5A at 30 VDC, and maximum inductive load ratings of 2A at 240 VAC or 2A at 30 VDC at a power factor of 0.4. The intuitive LCD display features backlit illumination with selectable Celsius or Fahrenheit temperature readout and 0.1-degree resolution for precise setpoint adjustment. Operating temperature range spans 0 Degrees C to 50 Degrees C at up to 95 percent relative humidity non-condensing, with user setpoint adjustability from 5 Degrees C to 30 Degrees C. The unit maintains excellent temperature control accuracy of plus or minus 0.5 Degrees C and withstands storage conditions from minus 20 Degrees C to 50 Degrees C. This professional-grade thermostat combines practical functionality with accurate digital control, making it an ideal solution for facilities requiring reliable heating system management across multiple voltage platforms and application types.