Feature: 1. SET ALARM THRESHOLD: Thermometer can be set to an alarm threshold value. When the measurement is higher or lower than the set threshold value, there will be a beeping alarm prompt sound, as well as alarm prompt light flashing. 2. ACCURATE MEASUREMENT: Infrared thermometer is designed for high accuracy and accurate measurement over a temperature range of ‑ 50 to 880°C (‑ 58 to 1616°F) with an accuracy of ±0.5°C or ±1% of the reading. 3. FOUR DIGIT DISPLAY: Digital infrared thermometer provides accurate readings on a variety of surfaces and conditions. Supports four digit display up to 8888. Compact and portable for easier use. 4. OPTICAL INDICATORS: Infrared thermometer optical indicators, as the distance to the measured target (D) increases, the area of the light spot measured by the thermometer area becomes larger. 5. EMISSIVITY: In order to compensate for the measurement error caused by different emissivity, it is necessary to adjust the pyrometer emissivity value according to the material of the object to be measured. Specification: Item Type: Infrared Thermometer Material: ABS Color: Black, Red Temperature Measurement Range: - 50 To 880°C (- 58 To 1616°F) Accuracy: ±0.5°C Or ±1% Of Reading Response Time: < 500ms (95% Of Reading) Spectral Response: 8μm To 14μm Optical Resolution: 12:1 (Calculated At 90% Of Energy) Emissivity: 0.1 To 1.00 Adjustable In 0.01 Steps (Default 0.95) Display Resolution: 0.1°C (0.1°F) Repeatability: +1.0% Of Reading Or +1.0°C (+2.0°F), Whichever Is Greater Laser: Wavelength 650nm, Output Power Less Than 1mW, Class 2 Laser Display: Four Digit Display, Maximum Display 8888 Display Size: Approx. 29x27mm / 1.14x1.06in Power Supply: 2 x 1.5V AAA Batteries (Without Batteries) Operating Temperature: 0 ° C To 50 ° C (32 ° F To 122 ° F ) Operating Humidity: ≤ 80% Relative Humidity (Non Condensing) Storage Temperature: -20°C To 60°C (-4°F To 140°F ) Drop Test: Approx. 1m/3.3ft. Package List: 1 x Infrared Thermometer1 x Lanyard1 x Cloth Bag1 x Instruction Book Note: 1. Please allow some error due to manual measurement.2. Infrared thermometer optical indicators, refers to the distance D of the thermometer to the measured target and the ratio of the measured target effective area S (D:S)