ขาย Diy Hy929 ไมโครโฟนติดผนังแข็งแรงสําหรับเครื่องยนต์การรั่วไหล ราคาที่ดีที่สุด

Works on wooden walls, doors, windows, steel plates, etc. Highly Sensitive, carefully adjust audio slowly, as not to cause discomfort to your ear-buds This audio gadget works by amplifying the vibrations of audio. When people are talking in a room their voices are simply a waveband, and depending on how loud they are talking, the waveband travels short and long distances which are picked up and amplified by this device. colour:Black + Sier Material:metal Package Contents: 1* Detecotor 1* USB Cable 1* Circular probe 1* probe 1* Headphone 1 * use ManualOnly the above package content, other products are not included. Note: Light shooting 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.