3-In-1 Decibel Meter Sound Level Reader+Humidity & Temperature Classroom Noise Meter Decibel Reader Noise Decibel Meter

color:As shown Material:ABS Package Contents: 1 x decibel meter 1 x positioning sticker 1 set x screws Only the above package content other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.