1.Handheld digital thermometer can be connected with K/ J-type thermocouple for temperature measurement. It features VA digital color display, data hold function, MAX/ MIN values, data storage, alarm buzzer, auto shutdown and more functions for convenient and easy use. 2.Handheld digital K/ J-type thermocouple thermometer with high accuracy, 3.With -200-1372/ -328-2501 K/ J-type temperature measuring range, supports -9-9 probe error range compensation. 4.VA digital color display for easy read. Data hold function, MAX/ MIN values. And only C has USB interface and supports data upload and real-time measurement.5000 groups of data storage, it can store the thermocouple channel temperature value (not for the ambient temperature). 5.Default 1300 upper or -200 lower limit alarm setting of temperature, with sound and light dual alarm.Powered by 3xAA or LR06 batteries (not included), auto shutdown after about 15min idle time; it can also be turned off manually. Compact size, portable and lightweight. With 1/4inch screw thread mounting hole, easy to install. Note:1. It supports K/ J-type thermocouple, but only K-type thermocouple is included when shipped. Model: TA612C Channel: 4-channel Data Storage: 5000 Groups Data Upload & Real-time Measurement: C only K/ J Type Measurement Range: -200-1372/ -328-2501 Accuracy: 0.2%+0.7 High/ Low Alarm Limit: Default 1300/ -200 ADJ Compensation: -9-9 Probe Error Range Compensation Mounting Thread: 1/4 inch Sampling Rate: about 1 time/s Colour:Red Material:plastic Package Contents: 1 x Thermometer 4 x K-type Probe 1 x USB Cable 1 x Storage Bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.