PT-1540MQ. Component family: piezoelectric chip. External thickness [mm]: 5mm. Manufacturer's product group: PT. Max temperature: +70°C.. Outside diameter [mm]: 17.5mm. Resonance frequency: 4kHz. RoHS: yes. Sound pressure [dB @ mm]: 80dB @ 10 cm. Type of circuits: piezo. [V]: +15V. Original product from manufacturer: Hitpoint. Quantity in stock updated on 12/11/2025, 21:08