-30deg C to 550deg C IR measurement range 0.1deg C resolution deg C & deg F switchable Laser targeter -20deg C to 60deg C Thermocouple air temperature range Auto standby Low battery warning Backlight for low light use Hold function to record the Max & Min figures recorded Average function to record the average Selectable Emissivity between 0.1 & 1.00 preset at 0.95 High precision IR thermometer combined with air temerature measurement allows instant calculations of temperature above or below ambient air temperature. Also features adjustable emissivity so you can get more accurate reading depending on the material you are measuring. Useful additional features include hold features for maximum minimum & average temperature. Specifications IR Temperature Range-30deg C to 500deg C Resolution 0.1deg C Accuracyplusmn 2deg C for -30 to 100plusmn 2 for -101 to 500 Response Time 0.5 Second Detection Element Thermopile Spectral Response 6 to 14microm Optical Lens Fresnel Lens Adjustable Emissivity 0.1 to 1.0 Field of View 100mm diam at 600mm Air Temperature Sensor Thermistor temperature sensor Range-20deg C to 60deg C Resolution 0.1deg C Accuracyplusmn 0.5deg C for 0 to 45plusmn 1deg C for -20 to 0 & 45 to 60 Dimensions 24.7x 50.9x 132.9mm Dx Wx H Weight 120g inc Battery Battery 2x AAA Supplied