Model Number: AMT-4102 Brand Name: TLead Key Specifications/Special Features: Technical specification:1. Measuring range: -40°C (-40°F) to 200°C (392°F)2. Operating temperature: -20°C (-4°F) to 50°C (122°F)3. Resolution: 0.1°C (0.1°F)4. Accuracy:±1°C (1.8°F) at 0°C to 100°C (32 to 212°F)±2°C (5.4°F) at (0°C) 100°C (32 to 212°F)5. Battery: 1.5V (LR41)6. The thermometer will automatically turn off after 10 minutes of non-use7. HHHH indication: the thermometer will display HHHH when the measured temperature exceeding the measuring range, and will alarm when the temperature lower or higher than the set temperature