Main Features: Automatic and manual range switching Inquiry function for maximum and minimum values Data hold and zero calibration function functions Relative value measurement and peak value measurement functions Outrange indication ( when the measured value exceeds the current range, LCD will display the signal OL to indicate that the range is overreached ) High precision. Measurement range ( 0.00 - 200000Lux ) Low battery indicator Touch tone and mute function Auto power-off function ( The machine will be powered off automatically keys are not operated for more than 10 minutes ) Compact design, durable, and portable Brand: MASTECH Model: MS6612 Material: Electronic Components Type: Data Logger,Measuring instruments Primary functions: Be used to measure the visible light produced by fluorescent lamp, metal-halide lamp, high voltage sodium lamp or electric incandescent lamp for a vivid and intuitive image display Scope of application: Agricultural,Home appliance,Industrial,Office Package weight: 0.330 kg Product size: 17.00 x 8.90 x 4.30 cm / 6.69 x 3.5 x 1.69 inches Package size: 19.20 x 11.50 x 7.00 cm / 7.56 x 4.53 x 2.76 inches Package Contents: 1 x MS6612 Light Meter, 1 x Chinese User Manual, 1 x Carrying Box