Infrared Thermometer Handheld Non Contact High Accuracy Backlit LCD Screen Industrial Temperature Gun Item Type: Infrared Thermometer Material: ABS Battery: 6F22 9V x 1 (battery not included) Model: TM500A Temperature: -30℃ to 500℃ (-22℉ to 932℉) Laser Point: Single point Geometric Correction: <400℃ Ambient Temperature 23℃+2℃: ≥0℃: ±1.5℃ or ±1.5% of reading, whichever is higher ≥ 32℉: ±3℉ or ±1.5% of reading, whichever is greater ≥-10℃ to <0℃: ±2℃ ≥14℉ to <32℉: +4℉ <-10℃: ±3℃ <14℉: ±6℉ Response Time: <500ms Working Temperature: 0℃ to 50℃, 32℉ to 122℉ Storage Temperature: -20℃ to 60℃, -4℉ to 140℉, without battery Working Humidity: 10% to 90% RH 30℃ (86℉) non condensing Working Altitude: 2000m Storage Altitude: 12000m Automatic Shutdown: About 5 seconds Sampling Rate: ≤0.5 seconds Backlit Function: Yes Low Battery Display: Yes Data Retention Function: Yes Maximum, Minimum, Average, Temperature Difference: Yes High and Low Temperature Alarm Function: Yes Zero Setting Function: Yes Maximum Display: Yes Power Consumption: ±50W