SMA-21-P15. Dimensions: 21x21x9.5mm. Frequency: 3.3kHz. Information: -. Mounting Type: PCB through-hole mounting. Operating Mode: Continuous. Operating Voltage: 1.5-15V. Operating current: 3.8mA. Rated Voltage: 12V. Series: SMA. Sound pressure: 85dB. Termination: PCB mounting. Original product from manufacturer: Sonitron. Quantity in stock updated on 13/11/2025, 13:51