Features: 1) Housing material: PBT 2) Weight: 0.5g 3) Max. input voltage: 30Vp-p 4) Sound pressure level: 75dB 5) Frequency response: 4,000Hz 6) Electrostatic capacitance co (pf):12,000±30% at 1kHz 7) Lead pin material: bronze 8) Operating temperature: - 20 ~ 70°C 9) Storage temperature: - 30 ~ 80°C 10) Applications: alarm systems, remote controls, home appliances, communication equipment