Simple and powerful to adjust through a handheld listening device, this audio gadget allows you to hear conversations with other obstacles through the switch. Therefore, its working principle is very simple, plug in the earphones, and then put the audio collector on top and listen to what is said. When someone is talking in the room, their voice is just a waveband. According to the volume of the call, the waveband can move short and long distances.These wavebands are picked up and amplified by this device. The sensors on the original audio gadgets sense the vibrations inside, the floor and the floor, and amplify them so that you can hear the words. The dial on the back of this cool audio gadget adjusts the volume and increases sensor amplification. It really makes more interesting and efficient. So why not find the truth, whether you are placing a room, a hotel room, an apartment or the next room, what kind of thing the device will make you into.
Ear listen Through Wall Device Bug Eavesdropping Wall Microphone Voice Bug. Special pull back vehicle with secret listening device. Easy to listen all the action.Complete function:charge hole, earphone hole and switch knob upside. Easy operate, cling to the door, window or wall. Able to get the sound out from the wooden/brick wall, windows or door or armor plate.
Can be used for recording pen. 1 Clockwise turn the master switch to start the device.2 Adjust the volume until you hear the sound clearly. Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures. The item "Sound amplifier Wall Microphone Voice spy Bug Ear Listen Through Wall Device Set" is in sale since Friday, October 16, 2020. This item is in the category "Home, Furniture & DIY\Smart Home & Surveillance\Home Surveillance\Home Surveillance Parts & Accessories\Other Surveillance Parts & Accessories". The seller is "motoml10" and is located in ShenZhen. This item can be shipped worldwide.