description sound meter extech?s ultra-compact sound meter meets class 2 standards with ±1db high accuracy that allows for quick and reliable sound level testing. it features a large backlit display for easy viewing and measures a & c weighting from 35 to 130 db with fast and slow response time mode. size is small enough to conveniently fit in your pocket and includes a wrist strap. california proposition 65 warning. features ±1db high accuracy meets class 2 standards (iec 61672-2013 and ansi/ascc s1.4/part 1) backlit lcd to view in dimly lit areas data hold and min/max functions auto power off with disable specifications acme tools brand name extech acme tools part number sl510 ansi approved yes ansi standards s1.4/part 1 assembled depth (in) 1.5 assembled height (in) 9 assembled weight (lbs) 1 assembled width (in) 4 california proposition 65 warning required yes case included no country of origin taiwan display format digital frequency range 1khz globaltradeitemnumber (gtin) 00793950475102 hand held yes height (in) 9 internet product code (ipc) a44b2a69e0f manufacturer warranty 1 year microphone directional pattern omnidirectional microphone type condenser microphone windscreen included yes package weight 1 package weight (lbs) 1 power source batteries upc 793950475102 weight (lbs) 1 weight (oz) 16