2pcs Waterproof Ultrasonic Transducer for Repelling Rats and Mosquitoes - ToToT 5120B Piezoelectric Ultrasonic Tweeter Review

These are low power tweeters only. I'm pretty sure it can emit ultrasounds, but the maximum sensitivity seems to be around 4800Hz. The best thing about them is that they are cheap.

The sound is clear and undistorted to my ears. The volume is great and the 10K linear potentiometer lets you change it smoothly. Definitely better than the SFM-27-1 I used. Will buy again.

The product is junk that does not meet any of the specified parameters. Would return all 8 but now they're all blown up. Since Revain doesn't leave a star, I had to give him one.

I had an unusual use and found leaks in hoses such as hoses. I have an ultrasonic leak detector and transmitter. I had to send a stronger signal to get through the tubes. It worked! This is a good and inexpensive way to find potential customers. It is versatile and can find leaks in other scenarios.

This is just a low power tweeter. I'm pretty sure it can emit ultrasounds, but the maximum sensitivity seems to be around 4800Hz. The best thing about them is that they are cheap.

The sound is clear and undistorted to my ears. The volume is great and the 10K linear potentiometer lets you change it smoothly. Definitely better than the SFM-27-1 I used. Will buy again.

The product is junk that does not meet the specified parameters. Would return all 8 but now they're all blown up. Since Revain doesn't leave a star, I had to give him one.

I've had an unusual use, which is finding leaks in hoses such as hoses. B. Vacuum tube leaks in cars. I have an ultrasonic leak detector and transmitter. I had to send a stronger signal to get through the tubes. It worked! This is a good and inexpensive way to find potential customers. It is versatile and can find leaks in other scenarios.