Brand: RadioShack. MPN: 273-0068. Add some sound to your projects. with a piezo buzzer tone of 2900hz, this 80db piezo pulse buzzer is ideal for small audio alert signals and various electronic projects. 2900hz buzz tone either continuous or alternating sound operates on 4-28vdc 10ma current 80db upc: 040293101916 upc: parts warranty: 90 daysSKU:ADIB000HYVPP8.