# Buzzer

![](https://451694785-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MPda5vaSVRKTQ6AoAmb%2Fuploads%2Fgit-blob-7765055f1a3e32082e102c25d98a535b24ee7d36%2Fimage.png?alt=media)

Electronic buzzer for 5 V operation. **Ensure correct polarity!! Positive** supply to the ‘-’ pin and ground to the ‘S’ pin! Data: Typical operating frequency 4000Hz at 80dB min, 5V DC at 5mA typical TMB12A05 or equivalent.

Tip to avoid mix up: The buzzer housing is slightly taller than the loudspeaker housing and has a label showing the + pin ident.