Digital Illuminometer High Accuracy 200000 LX Range 0.1LX Resolution Luxmeter Light Meter with Alarm Item Type: Digital Illuminometer Mode: TA630A Material: ABS Measurement Method: Integrated Measurement Range: 0.1 to 200000LX, 0.01 to 20000FC Measurement Gear: 200, 2000, 20000, 200000 LX, 20, 200, 2000, 20000FC Accuracy: ± (4%+10dgts); Calibrate with a standard flat lamp with a color temperature of 2856K; Resolution: LX less than 200:0.1; LX greater than or equal to 200:1 FC less than 20:0.01; 20 less than or equal to FC less than 200: 0.1; FC greater than or equal to 200:1 Illumination Display: 4 digit display, up to 1999 Sensor: Digital sensor with filter lenses Sampling Rate: 2 times/second Incident Angle: 120 degrees Repeated Testing: ± 2% Spectral Range: 400 to 700nm Automatic Shutdown: 15 minutes (can be manually turned off) Operating Environment: -10 to 50 ℃, maximum relative humidity of 80%; Indoor altitude less than Approx. 2000m / 6561.7ft Storage Environment: -10 to 50 ℃, maximum 70% relative humidity (with battery removed) Battery: 1.5V AAA battery x 2 (without battery)