Piezo-high tone loudspeaker with an installed transformer to increase the power. Due to the dynamic connection load 2 of these loudspeakers have to be connected in series (because of to little inner resistance 8 ohm), and may then operate at our ultrasonic modules M048N and M071N. With this you have a very high output of radiation!
M048 - Ultrasonic generator
M071N - Ultradźwiękowe urządzenie do odstraszania owadów