Description: Digital Thermometer Dual-channel LCD Display Temperature Meter Tester for K/J/T/E/R/S/N Thermocouple with LCD Back-light The device is able to measure the temperature of the liquid/vapors and surface temperature of a solid object, with a considerable wider measuring range than those of mercury thermometer and alcoholmeter. Features: 1. The electrical compensation function provide the compensation to the thermocouple error so as to improve the overall precision. 2. To measure the thermocouple of J, K, T, E, N, S and R type. 3. Unit Celsius and Fahrenheit unit. 4. Human centered design, easy operation. 5. Double display with back-light shows T1/T2 and combination of T1 and T2. Functions: Data hold and auto power off. Max./ min./ average value measurement. LCD backlight. Celsius and Fahrenheit unit selectable. Dual channel input. Power supply: 3 x 1.5V AAA batteries (Not included) Comes with 1 x GM1312 Digital Thermocouple Thermometer 2 x Temperature Probes 1 x English Manual