Key benefits Delivers loud, clear signal in lowvoltage systems with models 303P and 303A/303A7 achieving 102 dB to 104 dB sound pressure. Efficient operation with very small current draw due to capacitive reactance characteristics in parallel impedance. Compatible with common 48 ohm audio circuits, suitable for a range of lowpower audio and signaling applications. Designed for piezoelectric horn use, offering reliable performance in automotive and lowvoltage environments. Two power ratings to match your needs: 75150 W overall, with a single element power of 35 W. Withstand voltage rated at 1218 V, aligning with typical automotive and industrial power systems. Specifications at a glance Sound pressure 303P: 102 dB 303A / 303A7: 104 dB Impedance: 48 ohm Parallel impedance shows capacitive reactance nature, extremely large capacitive reactance, and extremely small current Power 75150 W total Single power: 35 W Withstand voltage: 1218 V Note: piezoelectric horn withstand voltage, not power What this means for you Strong audible signaling in compact form factors that are easy to integrate with existing lowvoltage systems. Low current draw helps reduce wiring and power supply stress in longrun installations. Flexible impedance makes it compatible with a wide range of drivers and control circuits. Reliable piezoelectric horn design suitable for environments where consistent alerting is important. Applications and use scenarios Automotive signaling and horn systems on 1218 V power supplies, where a robust alert is needed without current demand. Industrial control panels and safety alarms requiring a loud, clear audible warning on standard lowvoltage circuitry. Small facilities or office environments needing a simple publicaddress or alert horn that operates from typical 12 V to 18 V power sources.