10x ultrasonic air transducers 40kHz -105dB
Five transmitters & 5 receivers
This listing is for 10x ultrasonic air transducers. When you purchase this listing, you receive 5x transmitter transducers (labelled "T"), and 5x receiver transducers (Labelled "R"). I'll enclose some links for test circuits that I've designed for older projects. They have a center frequency of 40kHz. They can be used also in ultrasonic dog repelling circuits, as well as bat detector circuits. We don't have a ton of information on these transducers, but below you can see the specs that we do have. They should be treated as run of the mill 40kHz ultrasonic transducers. If you have any questions, we will do our best to answer. We also sell ULTRASONIC TRANSMITTER DIY kits. The ultrasonic receiver kit is on the way, and should arrive my the end of March.
Here are some test circuit documents that I've personally designed. These circuits can be used to transmit and receive 40kHz signals: (You may have to copy and paste these links to your browser in order to get them to work)
This document was created a long time ago for a kit that we no longer sell. The transmitter and receiver circuits can be used for any 40kHz standard transducers. Waterproof or not. I hope you find it educational.
This second circuit was also designed long ago. This circuit is much easier to build, but is not as efficient.