SPECIFICATIONSTypeUnit12065-112065-312065-512065-912065-12Rated VoltageV1.535912Operating VoltageV1-22-54-87-128-15*Rated Current(MAX)mA2030303030*Min Sound Output at 10 cmdB7580858585*Resonant FrequencyHz2400-2600Operating Temperature℃-20~+70Storage Temperature℃-30~+105Weightg2