HYD-4218  SPECIFICATIONSTypeUnitHYD-4218Rated Voltage(Square Wave)V12Operating VoltageV3-15*Rated Current(MAX)mA9*Min Sound Output at 10 cmdB90*Resonant FrequencyHz2900±500Operating Temperature℃-20～ 60Storage Temperature℃-30～ 70Housing Material ABSWeightg15