Home Company Profile Factory Profile Our Products Contact Us News     Speaker Microphone Transducer Buzzer Plate Receiver                      LET1275B-1 Product Number LET1275B-1 Description Ø12x7.5(H)mm; Enquiry Send Enquiry Specification Rated Voltage ( V ) 1.5 Operating Voltage ( V ) 1~2 Rated Current (mA) ≦70 Sound Ouput at 10cm (dB) ≧80 Coil Resistance (Ω) 16 ± 4 Resonant Frequency (KHz) 2.048 Operating Temperature Range (℃) -25 ~ +70 Storage Temperature Range (℃) -30 ~ +85 Weight 2g   Speaker Condenser Microphone Buzzer & Transducer Buzzer Plate Receiver Copyright 2004 by Union Team Limited (Group)