D:S=50:1,up to 1500 celcius K-type temperature measuring USB Interface, PC software EN61326-1 ... :-Co-axial laser aiming mode-Hand-held ,Non-Contact, infrared thermometer-Wider/Auto Range, rapid response, LCD display-Emissivity adjusting, K ... 9V power supply (7101 - 100 mA) TM814 Non Contact ir thermometer