Must Have Luminosity Gauge?-Keep track of illuminating intensity from light source, help you adjust optimal illumination of different locations, such as living rooms, warehouse, factories, laboratory. 12 month product quality warranty and life-time technical supports are provided. Scientific Photo Detector?-Sensitive silicon photo diode with filter provides measurements in higher degree accuracy,<20,000Lux/2,000FC:±3%rdg ±0.5%f.s; >20,000Lux/2,000FC: ±5%rdg±10dgt. It is useful for photography to check camera exposure and take amazing pictures. Clear Reading Display?-Lightness tester with backlight function is easy to read in dim or bright places. Data hold function for data freezing. Comes with high quality zippered carrying case, convenient for both indoor and outdoor usage. Par Meter for Plants?-Sufficient light is important for proper plants to live and thrive. Use this brightness tool to check lighting intensity in grow room or greenhouse, making your plants and vegetables grow better, avoiding over-lighting. Wide Applications?-Measuring luminance ranging 0.1~200,000Lux(0.01~20,000FC), resolution of 1Lux, sampling time 2time/s, this Lux reader works well for various kinds of lights sources: LED, garden grow lights, aquarium fish tank lamps, fluorescent, incandescent, flashlight, bulbs in offices, schools, home.Manufacturer: BTMETER. Date First Available: July 16, 2020. Is Discontinued By Manufacturer: No. Best Sellers Rank: #31 in Photographic Light Meters. Customer Reviews: 4.2 out of 5 stars 37 ratings 4.2 out of 5 stars. Item model number: BT-881C. : B08D3GGB8G. Item Weight: 10.9 ounces. Package Dimensions: 12.28 x 9.09 x 2.24 inches.