Product features: The range of temperature measurement is wide, which can be used in most hot metal machining sites. The large distance coefficient of 300:1 is less affected by the test distance in the actual measurement process; High precision, high repeatability, can be used as calibrator. High cost performance Main technical parameters: Temperature range: 385 ~ 1600 ℃ Measuring accuracy: + / - 0.3% plus or minus 2 ℃ (ring temperature 23 + / - 5 ℃) Repeatability: plus or minus 0.1% + / - 1 ℃ (ring temperature 23 + / - 5 ℃) Distance coefficient: 300:1 Response time: 100ms (95%) Emission rate: 0.100~1.000 adjustable step length: 0.001 Aiming mode: red double laser/telescope aiming Measurement mode: maximum/minimum display, scan/hold function Alarm mode: high and low temperature sound-light alarm Data storage: 2000 points Backlight: tricolor background light USB interface: USB interface and software Storage temperature: - 20 ~ 60 ℃ (including battery) Ring work: 0 ~ 50 ℃ Relative humidity: 10~95%, no condensation Power supply: nickel-metal hydride rechargeable battery or USB interface power supply Size: 264 x203. 5 x60mm