This practical mini lux meter is stable, safe and reliable to measure light illuminance, it also can show you the ambient temperature. It is widely used in lamps, husbandry, industrial and mineral industries, laboratory and office, etc.    Features:  Mini lux meter with stable, safe and reliable measurement.  Wide measurement range 0-200,000 lux and automatic/manual range shift.  Measuring unit is switchable: Lux or FC.  MAX / MIN / Data Hold functions, high accuracy.  LCD display with backlight for easy operation in darkness.  Low battery indication & Auto power off, energy saving.    NOTE:  When measuring under MAX mode, the meter will only display the value greater than the current value; when measuring under MIN mode it will only display the value less than the current value.    Specifications:  Brand Name: SMART SENSOR   Color: Black  Material: ABS Plastic  Measuring Range: 0-200,000 Lux  Resolution: 1 Lux   Accuracy: ±5%rdg±10dgts    Temperature Range: -10～50℃ / 14～122℉  Sampling Rate: 1.5 times/sec  Measurement Repeatability: ±2%  Operating Temperature: 0-50℃ (≤80%RH non-condensing)  Storage Temperature: -10-50℃ (≤70%RH non-condensing)  Power Supply: 3 * 1.5V AAA Batteries (Not Included)  Item Size: 16.5 * 5 * 2.7cm / 6.50 * 1.97 * 1.06in  Item Weight: 86g / 3.03oz  Package Size: 22 * 14.5 * 3.2cm / 8.66 * 5.71 * 1.26in  Package Weight: 122g / 4.30oz    Package List:  1 * Digital Lux Meter  1 * String  1 * User Manual