- Impedance Matcher Impedance matcher drives piezoelectric buzzer sound
- Electronic buzzer rate voltage: 12V DC
- Easy to Use: Using DC power. Connected to rated power and the buzzer will sound continuously. Can be controlled conveniently.
- Mainly made up by multivibrator, piezoelectric buzzer chip, impedance matching unit, resonator and shell.
- Connected to rated power and buzzer sounds continuously.