• Meets MIL-STD-2000 and WS6536

The unit features a programmable Integrated Circuit micro-controller which operates by reading the digital KType Thermocouple sensor located inside the tip. The IC then converts the Thermocouple voltage, along with the calibration potentiometers, to a Fahrenheit reading. This is then compared to the desired temperature set by the user. The micro-controller calculates a response and delivers power to the element to match and maintain the set temperature within +-1%. There is a failsafe in this loop that prevents temperature overshoot during heavy use or slow temperature change. The Therm-O-Trac + also utilizes an optocoupler which isolates the control circuit from the power circuit and only allows triac switching at zero voltage. The optocoupler, or opto-isolater, prevents the high voltage of the heating element from spilling over into the low voltage components by using LEDs. Comes with sponge and Model J202X tip. Operates on 110/120VAC.