Temperature range: -25 ℃ -1300 ℃ Temperature Accuracy: 1% Response time: ≤ 500ms Spectral response: 8μm-14μm resolution: 1 ℃ targeting methods: Coaxial laser targeting distance coefficient: 30:1 Emissivity: 0.10 -1.00, adjustable upper and lower limits alarm: √ synchronous display function: the instantaneous value and the maximum or minimum background light: √ Show maintain: √ ° F / ° C Conversion: √ use of ambient temperature: -18 ℃ -50 ℃ Power Supply: 9V laminated battery machine total power consumption: ≤ 35mA