BK8630 Digital 3 1/2 LCD light meter. CE-Mark approval. Portabaility and simplicity one-hand operation Light Meter Model BK8630 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 corrected: 2<2% Signal output function (output impedance 500Ù) With MAX/DATA HOLD function Valox housing to withstand accidental drops Attached carrying case Applications: Indoor Office environment Labs Environment studies Specifications: Display: 3½ digit liquid crystal display (LCD) with a maximum reading of 1999. Low battery indication: The " " is displayed when the battery voltage drops below the operating level. Operating environment: 0°C to 50°C, <70% R.H.. Storage environment: -20°C to 60°C, 0 to 80% R.H. with battery removed from meter. Accuracy: Stated accuracy at 23°C±5°C, <75% R.H.. Dimensions: 170mm(H) x 44mm(W) x 40mm(D). Weight: Approx. 220g including battery (1.5Vx4pcs AAA size). Lux: Sensor: Silicon photodiode Range: 20lux, 200lux, 2000lux, 20000Klux, 200000lux Resolution: 0.01lux BK8630 Bokles Light meter Lux meter à¤Ã×èͧÇÑ´¤ÇÒÁà¢éÁáʧ à¤Ã×èͧÇÑ´áʧ