This Lux meter is a precise and delicate instrument with durable structure. It senses brightness/lux of any environment. For safety and better use, please follow instructions carefully and always keep this manual within easy reach. 1. FEATURES 1.1 Wide range: from 0.1 Lux to 200,000 Lux, 0.01FC to 20,000FC. 1.2 Accurate test, fast response, and auto zero-adjustment. 1.3 Data hold: hold the current test result and peak value. 1.4 Symbol and unit display, easy to read. 1.5 Low battery indicator and auto power off. 2. SPECIFICATIONS 2.1 Display: 3 ½ digits, big LCD, max display 1999. 2.2 4 ranges: 200 Lux, 2000 Lux, 20,000 Lux, 200,000 Lux. 20 FC, 200 FC, 2000 FC, 20,000 FC. At 20,000 Lux range, to get a correct reading, the displaying value needs to multiply 10. At 200,000 Lux range, to get a correct reading, the displaying value needs to multiply 100. At 20,000 FC, to get a correct reading, the displaying value needs to multiply 10. Remark: 1FC=10.76 Lux Accuracy: <10,000 Lux/1,000 FC: ±3% rdg ± 0.5%f.s. >10,000 Lux/1,000 FC: ±5% rdg ± 10. (Accuracy tested by a standard parallel light tungsten lamp of 2856K temperature.) 2.3 Repeatability: ±2%. 2.4 Temperature characteristic: ±0.1%/ ℃. 2.5 Sampling rate: 2 times/s. 2.6 Sensor: photo diode and filter. 2.7 Operation environment: 0℃～40℃（32℉～104℉）0～ 70%Rh. 2.8 Storage environment: -10℃～60℃（14℉～140℉）0～ 80%Rh. 2.9 Overload display: top digit showing “1”. 2.10 Battery: 9V, 006P or IEC6F22 or NEDA 1604. 2.11 Battery life: continuous use 200 hours (alkaline battery). 2.12 Size: 100×60×27mm (sensor). 130×95×30mm (meter). 2.13 Weight：300g. 2.14 Accessories: manual, battery, black pouch, gift box. 3. PANEL DESCRIPTION ① 1) LCD display: shows “LUX”, “FC”, “P-H”, “H”, “ ”, “×10” (reading multiplying 10), “×100” (reading multiplying 100). 2) POWER button: Press “POWER” key can turn on/