Quantity: One Measuring Range: -32~550C(-26F~1022F) Measuring Accuracy: 2% or 2C Measuring Object Distance Ratio: 12:1 Emissivity: 0.95 by default Resolution: 0.1C 0.1F Spectral Response: (8-14) microns Response Time: 0.5 seconds Repeatability: 1% or 0.1 /F Unit Conversion: Yes Data Lock Function: Yes Laser Positioning Function: Yes Backlit Display Function: Yes Auto Power Off Function: Yes Power Supply: 2 x 1.5 AAA Batteries. Product net weight: 150g Product size: 146*80*38mm Packaging: blister pack Note: Measurement instructions 1. Hold the handle of the measuring device and point the infrared temperature sensor at the object to be measured. The instrument can automatically compensate for errors caused by changes in ambient temperature, but when the measuring ambient temperature changes too much or a high-temperature object is measured first and then a low-temperature object is measured, the instrument must perform thermal equilibrium in a stable environment before the next measurement can be performed. 2. The laser is only used for long-distance aiming and can be turned off during short-distance measurement, which can save energy. 3. How it works 1) Infrared thermometers are used to measure the surface temperature of objects. 2) The optical elements of the infrared thermometer emit, reflect, and transmit energy, which is collected and focused on a detector, which is electronically converted into a temperature reading and displayed. 3) The laser point on the instrument is used to aim at the measured object. 4. Field of view 1) Make sure that the area of the object to be measured is larger than the diameter of the circular infrared spot of the instrument. 2) The smaller the target, the closer the thermometer should be to the target. 3) Please make sure that the area of the object to be measured is not less than twice that of the measuring point. 4) Make sure that the area of the object to be measured is larger than the diameter of the circular infrared spot of the instrument. 5. Location of hot spot: To find a hot spot, first point the thermometer toward the outside of the measured area, and then slowly move the thermometer up and down to scan the entire area until the hot spot of the test point is determined. 6. Tips: 1) The instrument cannot be measured through a transparent surface (such as glass). 2) Steam, dust, smoke, etc. will block the infrared rays of the instrument and affect the measurement accuracy. 7. The ratio of the measuring distance to the object target: the ratio of the optical measuring distance to the object target is D:S=12:1, for example: the field of view of the instrument is 12:1, that is, when the instrument is 12 inches away from the object to be measured, the object to be measured is diameter cannot be less than 1 inch.Good quality product