Handheld thermometer Features: Model: sm320/sm520 Sm320range: -32 320¿-25608¿hsm520range-32 520¿-25968¿h Accuracy: 2or 2% D:s : 12:1 Resolution: 0.1 ¿0.1 ¿h Emissivity: 0.95 Response time: 500ms Data hold : yes Auto power off: yes Low battary indication: yes /¿hswitchable: yes Backlight : yes Laser sight switchable: yes Max / min /avg / ˜t: yes 20 point memory: yes Operation temp: 050 ¿ 32122 ¿h, 10 90 % rh Technical parameters (d:s=12:1): Sm320 Range 32 320¿-25608¿h Resolution 0.1or 1.0¿h Accuracy 2or 2% Distance/spot size 12:1 Emissivity 0.95 Typical distance to target 200mm to 600mm Response time 500ms Spectral response 8-14um Ambient operating range 0 to 50(32 to 122¿h) Storage temperature 10 90 % rh Sm520 Range -32 520¿-25968¿h Resolution 0.1or 1.0¿h Accuracy 2or 2% Distance/spot size 12 :1 Emissivity 0.95 Typical distance to target 200mm to 600mm Response time 500ms Spectral response 8-14um Ambient operating range 0 to 50(32 to 122¿h) Storage temperature 10 90 % rh Power supply: 9v battery Dimension: 155*56*187mm