Laser Temp 301 Specification: Spectral response: 8-4mm Optical: D.S : 30:1 (50mm at 1500mm) Response time: Less than 1 second Temperature range: From -50 to +850C Accuracy\*: From -50 to -20C : plus/minus 5C From -20 to +200C : plus/minus 1.5% of reading plus/minus 2C From +200 to +538 C : plus/minus 2% of reading plus/minus 2C From +538 to +850C : plus/minus 3.5% of reading plus/minus 5C Display resolution: 0.1C Emissivity: Adjustable from 0.10 to 1.00 (pre-set at 0.95) Over range indication: Display indication : -0L for a negative, over range, 0L for a positive over range. Laser sighting: Wavelength : 630-670nm Output < 1mW, Class 2 (II) Positive or negative temperature indication: Automatic (no indication for a positive temperature) (-) sign for a negative temperature. Display: 4 digits with LCD backlighted display. Auto-extinction: Automatic after 7 seconds of inactivity. High/low alarm: Flashing signal on display and beep signal with adjustable thresholds. Power supply: Alkaline 9