PT-2728WQ. Component family: piezoelectric chip. External thickness [mm]: 6mm. Manufacturer's product group: PT. Max temperature: +70°C.. Outside diameter [mm]: 30mm. Resonance frequency: 2.8kHz. RoHS: yes. Sound pressure [dB @ mm]: 80dB @ 10 cm. Type of circuits: piezo. [V]: +30V. Original product from manufacturer: Hitpoint. Quantity in stock updated on 12/11/2025, 21:08