RoHS: yes. Component family: piezoelectric chip. Manufacturer's product group: PT. Type of circuits: piezo. Outside diameter [mm]: 17.5mm. External thickness [mm]: 5mm. Resonance frequency: 4kHz. Sound pressure [dB @ mm]: 80dB @ 10 cm. Maximum supply voltage (V): +15V. Operating temperature range min (°C): -20°C. Operating temperature range max (°C): +70°C