description led light meter extech led light meters are used for monitoring and optimizing environmental light levels in buildings, schools, and offices. led lighting is being used more commonly, because they are less expensive, more energy efficient and brighter. model lt40 measures the light intensity for white led lights. california proposition 65 warning. features measure white led and standard lighting in lux or foot-candle (fc) units built-in sensor with protective cover 4,000-count lcd display cosine and color corrected measurements minimum/maximum average and auto power off complete with 2 aaa batteries and pouch specifications acme tools brand name extech acme tools part number lt40 assembled depth (in) 5.2 assembled height (in) 1.9 assembled weight (lbs) 0.3 assembled width (in) 1.0 california proposition 65 warning required yes case included yes country of origin taiwan display style lcd globaltradeitemnumber (gtin) 00793950470145 hand held yes height (in) 1.9 housing material plastic internal supplier part # lt40 internet product code (ipc) 006d8212777 light meter type multi-purpose manufacturer warranty 1 year measuring range 180 degrees package contents case package weight 0.3 package weight (lbs) 0.3 upc 793950470145 weather resistant no weight (lbs) 0.55 weight (oz) 8.8