🔊 Kemo Electronic M161 Ultrasonic Power Cannon Review

Doesn't work. I don't think he even gives a signal. The animals (dogs and cats) I tried it on just stared at me with a blank expression. I connected it to an output meter and no signal was registered. Next time I'll hook it up to an oscilloscope to see what kind of signal it produces.

Doesn't work at all. I bought an M048N that didn't work. Then I bought a more expensive M161 and it doesn't work either. I bought them so my neighbor's neurotic dog wouldn't bark all the time. It was a waste of money. Ultrasound machines are still full of empty promises and false claims.

I really liked this product. I would be happy if it was either ultrasonic or powerful (preferably both). The one I got was actually 11,500Hz and 50dB. I can confirm that it buzzes for 0.5 seconds every 5 seconds. Didn't bother my cats at all who were roaming around the house.

This is not a cannon. I used the instructions on the Kemo website to build the cannon. I have experience with electronic components and took the time to put this thing together. I used a 1 5/8 ID pipe, 30cm long with a plug on the back end. A piezoelectric element was built into the tube. I checked all the connections with my meters, everything works. Tested at close range <5 meters and animals didn't like it. But it is advertised as 300 meters. So we tried the neighbor's dogs, maybe 50…

I've tried several other ultrasound machines to try and get my neighbor's 100 lb LGD to stop barking. If she just walked out my door, she would run at me from wherever she was and bark non-stop until a few minutes after I came back inside. I tried ignoring them, then hot dogs and steak to be nice, and then I started trying bark deterrents. All other deterrents scarcely caught their attention. 5 seconds after turning it on, it moved away from where I was aiming and just stared for a couple of…

I bought two of these to make sonic guns. The units receive 13V but only output 2.7VAC to the speaker. So I took my gun, pointed it at two dogs 10 feet apart, fed them 13 volts and nothing. The dogs didn't even turn their heads. So I ask: does this powerful pulse generator really work? Considering it only shuts off for 0.5 seconds every 5 seconds, it seems pretty pointless trying to scare off animals or scare off dogs. 1/2 Second Tone is a tone signal in the world of animal sounds. Update: I…

1. BUY THE RIGHT PIEZO SPEAKER. I can't say enough.2. Yes, it's a 0.5 second burst every 5 seconds. So buy more than one and go for it! Yes, it could be more expensive. But what do you want? Something that works or another device that doesn't work? Now I have 3 of these and I run them in a checkerboard pattern; it's not difficult once you know how. I don't want to add more for fear that the cannon will be heavy, but I guess that's unfair. What gets really heavy is the battery, although the LiPo