• ±(0.15% rdg + 1.8°F/1°C) accuracy
  • Large backlit LCD
  • 0.1°/1° resolution
  • Readout in °F, °C, or K (Kelvin)
  • Data Hold function
  • Max/Min/Avg readings with relative time stamp

What's in the Box

  • Type K bead wire temperature probes
  • 3 AAA batteries
  • Pouch case


The Extech TM300 Type K/J Dual Input Thermometer is for calculations of differential temperature readings while side buttons allow for convenient one-hand operation. The TM300 comes with an offset key used for zero function to make relative measurements and auto Power off with disable feature. The Dimensions are 8.7 x 2.5 x 1.1" (220 x 63 x 28mm). The Temperature range for Type K is -328 to 2501°F (-200 to 1372°C) and for type J is -346 to 2012°F (-210 to 1100°C).