• Extech 421502  Type J/K, Dual Input Thermometer with Alarm


Thermometer with dual display, relative and programmable High/Low audible alarms

The 421502 Dual Type K/J Input Thermometer has a dual display and programmable High/Low audible alarms. It features a high, 0.05-percent accuracy, Min/Max/Average readings, Data Hold, Relative function, and differential temperature measurement between Type J, Type K or both J and K. Comes complete with two Type K bead temperature probes, protective holster with stand, and 9V battery.


  • Temperature range: -328 to 2498°F (-200 to 1370°C) for Type K and -328 to 1922°F (-200 to 1050°C) for Type J
  • Rugged water resistant design with protective holster/stand
  • Large 2000 count LCD displays T1, T2 or T1-T2, plus Elapsed Time
  • Data Hold, Relative, MIN/MAX/AVG and HOLD functions
  • Programmable Hi/Lo audible alarms
  • Selectable °C/°F units



Specifications                                Range
Range, Type K °F (°C)         -328 to 2498°F (-200 to 1370°C)
Range, Type J °F (°C)           -328 to 1922°F (-200 to 1050°C)
Basic Accuracy                     ±(0.05% rdg +0.6°F); ±(0.05% rdg +0.3°C)
Resolution                             0.2°F/0.1°C
Dimensions                           7.6 x 3.6 x 2.1" (192 x 91 x 53mm)
Weight                                  13oz (365g)


Download Brochure
Download Users Manual

Extech 421502 Type J/K, Dual Input Thermometer with Alarm


Related Products

Extech TM100 Type K/J Single Input Thermometer

Extech TM100 Type K/J Single Input Thermometer

Type K/J Single Input ThermometerCompact-size Thermometer with Side-Button Controls For Convenient O..