THM501 7-Day Programmable Thermostat 24-Millivolt Low Voltage Central Heating/Cooling

Original price was: $ 89.99.Current price is: $ 59.95.

Introducing the THM501 programmable thermostat, a versatile solution compatible with millivolts and 24 volts. With 7-day programming and four settings per day, it ensures a customized schedule for optimal comfort and energy efficiency. Features like automatic heating/cooling changeover, pre-comfort recovery, and a usage monitor enhance performance. The extra-large LCD display, automatic ventilation, selectable cycle rate, and key lock function add convenience and security. The THM501 interfaces seamlessly with humidifiers and HVAC systems, providing automatic humidity and temperature control. Its specifications include a wide temperature and humidity range, making it a reliable choice for smart climate management.

  • Millivolts/24Volts compatible
  • 7-day programming with 4 settings per day
  • Automatic heating/cooling changeover
  • Pre-comfort Recovery
  • Usage Monitor
  • Temperature Trend Graph
  • Key Lock Function

60 in stock

SKU: 2380024 Category:


  • Extra-large LCD display with backlight — sets and displays house temperature (°C or °F),
  • day, hour and minute (in 12- or 24-hour format)
  • Temperature can be set in half degrees
  • Interfaces with humidifier for automatic humidity control
  • Interfaces with heating/air conditioning systems for automatic temperature control
  • Automatic change-over for HEATING/COOLING programs
  • Copy 1 day’s program to another day
  • Automatic ventilation
  • Selectable cycle rate
  • Usage monitor
  • Filter change reminder
  • Millivolt & 24 V compatible
  • Includes mounting hardware



  • Number of programs: 7 Day with 4 settings per day
  • Temperature display range: 0 – 55°C (34 – 99.5°F)
  • Humidity display range: 20 to 95%
  • Temperature setting range: 5 – 35°C (41 – 95°F)
Weight 0.362 kg
Dimensions 4 × 21.2 × 25 cm

1 Unit, Dual Pack, Six Pack


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