1. Measurement Range: 0.1 to 200,000 lux; 0.01~20,000Fc 2. Resolution: 0.1Lux / 0.01Fc 3. Accuracy:Float up or down 4% 4. Measurement speed: 2 times / second 5. Power: 9V battery (not including)* 1PCS 6. Data Hold function 7. High resolution and response quickly