Split-type design: The light sensor and the display body are split. The sensor can freely choose the direction and height of the illuminance, and the reading is more convenient and the measurement is more user-friendly. 3 ranges: This light meter has 4 range settings, 2000 Lux range: reading x 1; 20,000 Lux range: reading 10; 100,000 Lux range: reading 100 Accurate and easy reading: The use of LSI circuit provides reliability and high durability. The LCD display provides low power consumption and clear reading in high ambient light in the evening. High Reliability and Durability: The light meter allows a wide range of light measurement. It could adjust zero automatically and excellent operation. Maintenance: The calibration interval of the photodetector will vary depending on the operating conditions, but generally the sensitivity decreases in direct proportion to the product of the light intensity and the operating time. In order to maintain the basic accuracy of the instrument, periodic calibration is recommended.