This handheld digital light level meter has a built-in silicon photo-diode light sensor with spectral response filter (with cap). It has been designed for the measurement of light and temperature. It provides rapid, accurate readings displayed on an easy-to-read backlit LCD dual display. The device features data hold, min/max and auto power off. The ergonomic design is highly portable and pocket-sized. There is a low battery indicator. Requires 3x AAA batteries.Features & Benefits:• Backlit LCD dual display• Built-in silicon photo-diode light sensor with spectral response filter (with cap)• Automatic measurement function• LUX/FC unit selector• Air temperature selector - ? or °F• Features data hold, min/max and auto power off• Low battery indicator• Requires 3x AAA batteriesSpecifications:Data update: 500msPower supply: 3 x 1.5V AAA (sold separately)Operating time: Up to 60 hrsWeight (with batteries): 141.5gContents:1 x Handheld Digital Light Level Meter, 0-200000lx