Description 0 to 20,000 Lux, auto range, Lux/Ft-cd LIGHT METER Model : PLX-111 FEATURES * Wide measuring range, 0 to 20,000 Lux. * Lux & Foot-candle ( Ft-cd ) unit selection. * High resolution : 1 Lux, 0.1 Ft-cd. * Sensor used the exclusive photo diode & color correction filter, spectrum meet C.I.E. photopic. * Sensor cosine correction factor meet standard. * All in one, meter build in the light sensor, easy operation. * Microprocessor circuit ensures high accuracy and provides special functions and features. * Data hold, to freeze the desired reading value. * Auto power off saves battery life. * Operates from DC 1.5V ( UM4/AAA ) x 4 PCs batteries. * Light sensor protection cover is the standard accessory. * Microprocessor circuit ensure high accuracy, and also and also provides special functions and features. * Durable, long-lasting components, enclosed in strong, compact ABS-plastic housing. GENERAL SPECIFICATIONS Display LCD size : 28 mm x 19 mm. Measurement Lux : 0 to 20,000 Lux. * auto range range/unit Foot-candle ( Ft-cd ) : 0 to 1,860 Lux. * auto range Sensor The exclusive photo diode & color correction filter, spectrum meet C. I.E. Cosine correction factor meet standard. Circuit Custom one-chip of microprocessor LSI circuit. Data Hold Freeze the display reading. Over Indication Over range indicator : ” – – – – “ Sampling Time Approx. 1 second. Power off Auto shut off saves battery life. Operating Temp. 0 to 50 ℃. Operating Humidity Less than 80% R.H. Power Supply DC 1.5 V battery ( UM4/AAA ) x 4 PCs. Power Current Approx. DC 5.5 mA Weight 190 g/ 0.2 LB. Dimension 210 x 49 x 40 mm (8.3″ x 1.9″ x 1.6″) Accessories Instruction manual………………………………………………..1 PC Included Light Sensor protection cover…………………………………. 1 PC Optional Accessory Soft carrying case with sash, ( 210 x 80 x 50 mm ), Model : CA-52A ELECTRICAL SPECIFICATIONS (23± 5 ℃) Measurement Range Resolution Accuracy Lux 0 to 20,000 Lux 1 Lux ± 5% rdg ± 5 dgt Ft-cd 0 to 1,860 Ft-cd 0.1 Ft-cd @ reading