BK8731 Digital 3 1/2 LCD portable light meter. CE-Mark approval. Portavility and simplicity one-hand operation Light Meter Model BK8731 Features: CE-Mark approval Portability and simplicity one-hand operation Accurate visible compensation filter 1 is used CIE(ë): 1<2%,<3%,<5%,<8%, V(ë) match Cosine conected: 2<2% With lux and fc two units select function With PEAK/DATA HOLD function With pocket hook Hand-Held light weight disgn Specifications: Display. 3 1/2 digit liquid crystal display (LCD) with a maximum reading of 1999. Lowbattery indication: The " " is displayed when the battery voltage drops below the operating level. Operating environment 0 °C to 50 °C , at < 70% relative humidity Storage temperature: -20 °C to 60 °C , 0 to 80% R.H. with battery removed from meter Accuracy: Stated accuracy at 23 °C +- 5 °C , 75% relative humidity. Battery. 1.5V x 3 pcs AAA size. Dimensions: 155mm (H) x 48 mm (W) x 24 mm (D) Weight: Approw. 2.9 oz. (81.2 g.) including battery UVA: Sensor: UV Photo diode Range: 20 lux, 200 lux, 2000 lux, 20000 lux 20fc, 200fc, 2000fc, 20000fc Accracy. +-(No reading +- No digits) Resolution: 0.01 lux, 0.01fc BK8731 Bokles Light meter Lux meter à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ