WT-M12

Works great. Hook it to your computer where it will be recognized as an external disk drive. Then add or delete whatever mp3 files you want. I removed the ones that came with it and replaced them with my own recording. I use it next to my doorbell and if anyone approaches it says “Please, no solicitors”. The sound quality is great for this purpose. I wish it could play other formats besides mp3 but it is what it is.

The media could not be loaded. This thing is pretty great, and honestly way easier than you would think1. Plug this into your computer/tabletIt should show up as some kind of storage device. It has about 0.5 gigs which isn't a lot, but for an audio file, it's plenty.2. Select the audio file you want to add to the device and drag and drop it into the deviceIf for whatever reason the new file is too large, you can delete the pre-existing files by simply selecting them and deleting them. I did this from the start to make things simpler. The instructions that come with the device don't really make it clear how to select just one audio recording. To make things simple, I just have one recording on the device.3. After you have the audio file you want on the device, and have safely unpaired/unmounted from your computer/tablet, install the device where you want it. It comes with some plastic mounting hardware, but I used a command strip because it's more apartment friendly.4. Enjoy! In my video the device plays the opening to the haunted mansion ride. It has a switch on the side for volume and power. All the way to the top is high volume, the middle is low volume, and the bottom is off. It's that simple!Hope this helps 😁

So this was used for an exhibition as I wasn't going to babysit a speaker for 3 weeks. It worked well for the majority of the space being fairly quiet both volume levels were very adequate. They failed a little on opening night when there was a lot of people talking and having a good time, ( it wasn't quite audible with so much other background noise which is fair).For programming on Mac OS, this thing was a challenge. After many hours of trying to get my own mp3 on it and still having the old files play ( imagine my surprise trying to put peaceful nature noises and then a default horror-scream cycles on..😂 ). For any of you on Mac, plug the device into your mac, delete the old files, add your new mp3 (in the size restraint), be patient it is a very slow flash system, and then DELETE YOUR TRASH ON YOUR MAC. After showing the hidden files on the device you can see some type of link back to the trash-can. So until you clean your trash on your Mac out, there will be a "ghost" file it keeps playing even after being deleted. I discovered this, emptied my trash and then you can see the hidden trash link was then empty. Thankfully this solved any ghost plays and the only audio looped was my beautiful nature noise. I'd also advice not formatting the whole disk on a mac, as it seems to have some residual programming to tell the motion sensor what to do and this vanishes if reformatted completely. There are also several free websites that will reduce mp3 file size if you have something too large, that can be found by searching. Hope this is helpful to anyone struggling with it.

The device worked initially with the preloaded sounds. I followed the instructions exactly as provided to add my own sounds. The files I used are MP3, the names are 1.mp3, 2.mp3, etc. Each file is only about 60kb -- all files totaling no more than 500kb together. After trying different configurations for several hours, I was unable to get it to play any of my sounds. I tried following other reviewers' advice of turning the switch on and off, holding buttons, etc, but still no luck. I can see the light flash when I hold the A button down, but other than that, no action/sound. I have not been able to get my own sounds out since replacing the files. I am pretty tech savvy and was still unable to get it to work.I do not recommend because either the device does not work as advertised, or the instructions are so terribly written that following them does not yield expected results.

I bought a few of these to put in my haunted house so that when people walked passed them (even though they couldn't see them, they went off! They worked better than expected. The sensor works great, the volume goes louder than I expected and it was so easy to use!

I was looking for a a motion activated speaker to add a soundboard that I made for trick or treaters as they approach our door, and this seems to be perfect! After having read previous reviews you do need to be mindful of how large of an MP3 file you add to the device, as well as what it's named (ie. 1.mp3)Once the file was added the device did not initially play it, however I took the advice of another reviewer and turned the device off once or twice and held the buttons down thereafter a couple times, and VOILA! it worked :) Take note, the speaker is extremely loud with no adjustment to lower, so be mindful, you may want to lower the file volume to compensate before adding. This may sound like a a lot for someone who's not as tech savvy, however in total it took only about 15 min or so. Once I did this it worked like charm! I've tested it several times, and walked past in which it activated every time perfectly! For $22 it's a sweet addition to our Halloween arsenal. Hope this helps!

Would not buy unless you are tech savy. Hard to record sounds.

The media could not be loaded. After a lot of searching, I settled on this device for my yard for halloween. Extremely pleased with my choice! The device is extremely small, but whacks a great punch in terms of sound! It's able to reach very far in terms of detecting motion. Up to 13 ft. In my video, you can barely see where I hid it. I made sure it gets pointed out to you so you can see how far away it was yet I am still able to hear the audio very clearly from where I am standing.If you want to hide it even better, like I did, put some black tape over the red light that turns on when the motion sensor activates. It does not interfere with the function of the device if this light gets covered.