Extech 421502  

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.