Enhanced Version Super Sensitive Listen Thru-Wall Contact/Probe Microphone Amplifier System (Enhanced Version Super Sensitive Probe Microphone) (Enhanced Sensitive Microphone)

This thing really works i was able to hear my kids talking through wall but the real reason I bought it was to locate underground water leaks. Haven't got to use it yet but if it does work it could be a lucrative tool

I think this device works pretty well when it comes to sound detection, and it even looks and feels like a high quality build. My biggest complaint is that it doesn't record.. there's nothing in the instruction booklet about the recording feature, and there's nothing on the device itself about recording. There's literally only one bullet-point in the product description at the top, and there's only one word: Recorder - and this is why I spent the extra $30 or so for this one. Since it doesn't record, I'm returning this one and found another one on Amazon for about $8.Two things I didn't like about the functionality: one, the wall sensor will not sit flush (I was using it to listen thru my floor, in addition to the wall). Meaning, the internal spring that pushes the little needle out is so strong, you have to really push it down hard to keep it from moving or pushing itself back up. Second, you can easily injure your eardrums and have permanent hearing loss from this product. The volume is able to get extremely loud, and there is no safety feature to protect your ears from sharp, loud noises. I was left with my ears ringing badly just because the sensor moved a little while I was holding it against the wall, and the scraping sound was amplified so loud, it really is dangerous. There needs to be a sound dampening feature to protect against random and unexpected super loud sounds, caused simply by scooting the sensor a little bit while on the wall. And one more thing, I really wish the instruction booklet was written in English, that would have helped a lot!By the way, I've included a picture of the heavy wall sensor for you to see. The manufacturers printed the words "coniact miorophone" on it. I'm not sure what that means, it almost appears to be Latin, but Google translate came up with no translation results for these two strange words. The instruction booklet is written in the same language, thus I was not able to read or understand any of it. It appears to be written in some type of old English dialect or Latin based language.

I do like this product, it works well. I recommend using a dab of hot glue to attach the contact microphone to the wall, making sure not to use too much glue and sticking on the center needle. this will reduce the extra noise from your hand holding it.ALSO! if you look at the side, you will notice there is an opening for an SD card. a regular SD card will not work. there is another piece for this device that will allow you to record. it fits in the opening, I had to look for it on Aliexpress. and it is only $10 plus shipping. So I ordered that and am waiting, then I can update this review.

I ordered this product to help listen to mechanical sound vibrations. I haven't tried it for through-wall voice listening, but it is super sensitive. Maybe even too sensitive. I tested it by putting the contact microphone flat on my desk surface. Even on the lowest sensitivity, touching the desk anywhere or sliding a finger across it makes a pretty strong sound. Since it amplifies vibrations as sound, some unwanted sounds may come through also--a computer fan or disk drive, air conditioning, a radio playing in the room, etc. Even moving the cables on this device makes sound, so I will try to plan on positioning the amplifier and cables as needed, then tape everything down and try not to touch anything while listening. It's really sensitive. Be careful for your ears.

Great little device. Can hear inside walls, thru walls. Ive only used on sheetrock walls. Good for leak detection, or spy work if that's what your after. Volume is touchy, but very clear.. I use regular head phones with mine, not the ear buds, because my ears don't like any ear buds.. would buy again, and I do recommend for others in need of an affordable little in wall or thru wall listening device..

But I don’t like you I didn’t get two of them . As soon as you open your becky, you’re find out this is not a toy . It is built to last. You would not believe how will it works I can tell you now that you want this product, It’s so sensitive you’ll will be so surprised on how extremely well it works,it hearse Everything I mean not literally I don’t know what you need at for but it work for you guaranteed I had one and I still cannot believe how will it works,I am one happy shopper And you feel that way too I promise.

I bought this to detect and localize the sound in my washing machine, which has some sounds while turned off, but this product was justgiving me a "radio noise-like" sound in the background, making it impossible to localize the problem.

Excelent !!!!