1. Degree C / Degree F Selection: The unit conversion operation allows data to transfer between Degree C and Degree F units. 2. Multi Function: The infrared temperature gun with AT function , which can measure current ambient temperature. 3. High Accuracy: The laser temperature gauge has a high precision sensor, under self calibration mode, can calibrate the unit between -5.0 Degree C and +5.0 Degree C, adjusting the emissivity from 0.1-1.0 according to the surface material being measured to improve measurement accuracy. 4. Fast Response: The infrared temp gun thermometer with a distance to spot ratio of 12:1 and a response time of less than 500Ms, Spectral response 5~14 um , 0.5s shows the most accurate temperature readings even at great distances,rapidly and accurately measured of object surface temperature. 5. Easy To Use: With backlight, makes it more easier to know the data even at the night . Data hold, low battery indication, auto power-off, small in size ,easy to store and carry. 6. Widely Used (Not for people): Temperature measurement range -50~530 Degree C (-58~986 Degree F). Temperature gun can be used for iron industry temperature test, food surface temperature test, oil surface temperature test, water surface temperature test, electrical Engineering etc.Specification: General Model GM53 Material ABS Resolution 0.1 degree C / 0.1 degree F Measurement Range -50~530 degree C Response Time 500 ms Power Supply 2 x AAA batteries ( not included) Package Weight One Package Weight 0.15kgs / 0.33lb One Package Size 20cm * 12cm * 5cm / 7.87inch * 4.72inch * 1.97inch Qty per Carton 40 Carton Weight 7.00kgs / 15.43lb Carton Size 50cm * 42cm * 27cm / 19.69inch * 16.54inch * 10.63inch Loading Container 20GP: 470 cartons * 40 pcs = 18800 pcs 40HQ: 1091 cartons * 40 pcs = 43640 pcs