Feature: 1. High Precision and Wide Temperature Range: Handheld digital K/J/T thermocouple thermometer with high accuracy and four channels. Offers high precision with temperature ranges for K Type: -200°C to +1372°C (-328°F to +2501°F), J Type: -200°C to +1200°C (-328°F to +2192°F), and T Type: -200°C to +400°C (-328°F to +752°F). 2. Auto Shutdown and Manual Off: Automatically shuts off after about 15 minutes of inactivity to save power, and can also be manually turned off when not in use. 3. 5000 Group Data Storage and Data Upload: Can store up to 5000 groups of data and supports data upload via USB. Can store thermocouple channel temperature values (not applicable to ambient temperature). 4. VA Color Screen with Backlight and Sound/Light Indication: Equipped with a VA digital color screen with backlight and sound/light indication for alarms. The color screen and backlight ensure clear visibility in various lighting conditions, while the sound/light indication alerts users to temperature limits being exceeded, enhancing safety and reliability. 5. Portability and Easy Installation: Compact and lightweight design with a 1/4 inch screw thread installation hole. The portable design makes it easy to carry and use in different locations. Specification: Item: K/ J / T Type ThermometerMaterial: ABSMain Color: Black, RedType of Thermocouple: K/J/TChannel: 4-channelData Storage: 5000 Groups Only store thermocouple temp. data (not support ambient temp. data)Resolution:(-99°~+999.9°)0.1°C/℉(-200°~-100°,≥1000°)1℃/°FRange:K Type: -200~+1372℃/ -328~+2501℉J Type: -200~+1200℃/ -328~+2192℉T Type: -200~+400℃/ -328~+752℉Accuracy: ±0.2%+0.7℃High/ Low Alarm Limit: Default 1300℃/ -200℃ADJ Compensation: -9~+9℃USB Connection: YesMounting Thread: 1/4 inchSampling Rate: About 1 Time/sAuto Power Off: 15 Mins(can be Canceled)Working Environment: -10~50℃, Max 80%RH, Indoor Altitude