Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      LET1290-05A1 Product Number LET1290-05A1 Description Ø12x9.0(H)mm; Enquiry Send Enquiry Specification Rated Voltage ( V ) 5 Operating Voltage ( V ) 4~7 Rated Current (mA) ≦70 Sound Ouput at 10cm (dB) ≧85 Coil Resistance (Ω) 45 ± 5 Resonant Frequency (KHz) 2.4 Operating Temperature Range (℃) -20 ~ +70 Storage Temperature Range (℃) -30 ~ +80   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)