TASI TA636A Digital Light Meter Lux Meter Handheld Illuminometer Photometer with Integral Type Sensor 4 Digit LCD Display 0~200,000 Measurement Range Lux/FC Unit Selection Luxmeter Tester for Grow Plants Agriculture Farms Home Office TA636A illuminance meter is used to measure the brightness of visible light, can be automatically converted to measuring gear; suitable for warehousing, factories, hospitals, schools and other occasions. Features: 【High Accuracy】The light meter accommodates a wide range of light intensities, effectively measures light intensity and display results in units of Lux or FC range from 200 to 200,000 lux and 20 to 20,000 FC, high accuracy of ±(4%+10). 【LUX/FC Measurement Units】Our lux light meter visible light brightness, presenting values in either LUX or Foot Candles to suit diverse measurement standards and preferences. Simply Press UNIT key to convert illuminance unit(LUX/FC). 【High-Precision Probe】Silicon photodiode with filter and 120° angle of incidence for flexible measurement of angle and position. 【Versatile Tool】This is a handheld light meter with a large 4-digit LCD screen with backlight, data hold, MAX/MIN measurement, low battery indicator and auto power off.  【Compact & Effective】As our digital Illuminance/light meter is designed with compact size and lightweight which fits easily into a work bag or large pocket and barely adds any weight. 【Wide Application】This compact light meter is used for measuring the brightness of visible light (400~700nm spectral range), it's suitable for factories, hospitals, schools, home, office, etc. Specifications: Model: TA636A Material: ABS Measurement Method: Integral type Range: 0.1~200000LUX / 0.01~20000FC Measuring Level: 200 / 2000 / 20000 / 200000LUX                              20 / 200 / 2000 / 20000FC Accuracy: ±(4%+10dgts)                  (calibrated under the standard incandescent lamp at color temperature 2856°K) Resolution: LUX<200: 0.1; LUX≥200: 1                     FC<20: 0.01; 20≤FC<200: 0.1; FC≥200:1 Display: 4 digits, max 1999 Light Sensor: Silicon photodiode with filter Sampling Rate: 2 times/s Incident Angle: 120° Repeated Test Deviation: ±2% Spectral Range: 400~700nm Auto Power Off: 15mins (can be disabled) Working Environment: -10~50℃, Max 80%RH indoor altitude < 2000m Storage Environment: -10~50℃, Max 70%RH (battery removed) Power: 2 * 1.5V AAA(RO3/LR03) (battery not included) Item Size: 150 * 56 * 28mm / 5.91 * 2.20 * 1.10in Item Weight: 150g / 5.29oz Package Weight: 160g / 5.64oz Package Size: 19.6 * 7.7 * 4.2cm / 7.71 * 3.03 * 1.65in Package List: 1 * Digital Light Meter 1 * Protective Cover 1 * Drawstring Bag 1 * User Manual (English)