* Type K/J thermometer with "plug and play" function.
* Type K (-100 to 1300 oC), Type J (-100 to 1150 oC).
* Be plugged with optional "plug & play" probes :
　YK-200PAL, YK-200PAS, YK-200PAM, YK-200PIR, YK-200PLX to be a professional Anemometer,
　Mini Vane Anemometer, Infrared Thermometer, Humidity Meter and Light Meter.
* RS-232, Hold, Memory record, oC/oF, 0.1 degree.
* Patented.