The Digitron TM-22 is a low cost Differential Digital Thermometer specifically designed for HVAC professionals and complements Digitron’s PM Series range of pressure instruments.

Manufactured from tough ABS plastic, this water-resistant instrument is supplied with a rubber boot to provide added protection during routine use. It can be magnetically attached for ease of use, and the back lit LCD allows easy viewing of the display in poor light conditions.


  • Differential Inputs
  • °C / °F Selectable
  • Water Resistant
  • ’On’/’Off’ and ’Hold’ functions
  • Yellow Rugged case with protective rubber boot
  • Backlit Digital Display
  • Magnetic attachment or tilt stand
  • Auto off after 12 minutes
  • Min/Max function
  • Selectable input
  • Long battery life: typically 500 hours (battery 2xAA not supplied)

Please note that the probe for the TM-22 is an optional accessory and is not included in the standard scope of supply.