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. Features: Handheld digital K/ J-type thermocouple thermometer with high accuracy, single-channel (A)/ double-channel (B)/ four-channel (C) for option. With -200~1372℃/ -328~2501℉ K/ J-type temperature measuring range, supports -9~9℃ probe error range compensation. 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. 9999 groups (A/ B) or 5000 groups (C) of data storage, it can store the thermocouple channel temperature value (not for the ambient temperature). Default 1300℃ upper or -200℃ lower limit alarm setting of temperature, with sound and light dual alarm. Powered by 3 AA 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 1/4" screw thread mounting hole, easy to install. Note: 1. It supports K/ J-type thermocouple, but only K-type thermocouple is included when shipped. 2. Size and color may be slightly different because of manual measurement and different light conditions. Thanks for understanding. Specifications: Model: TA612A/ TA612B/ TA612C (Optional) Channel: 1-channel (A); 2-channel (B); 4-channel (C) Data Storage: 9999 Groups (A, B); 5000 Groups (C) Data Upload & Real-time Measurement: C only Color: Red Material: ABS 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 Power Supply: 3 * AA/ LR06 Battery (NOT included) or USB 5V 1A (C only) Item Size: 177 * 70 * 35mm / 6.97 * 2.76 * 1.38in Package Size: 295 * 100 * 60mm / 11.61 * 3.94 * 2.36in Package Weight: A: 520g / 1.15lbs B: 535g / 1.18lbs C: 565g / 1.25lbs Package List: 1 * Thermometer 1 * K-type Probe 1 * Storage Bag 1 * User Manual (English)