Note: Do not reverse the positive and negative poles of the electret, otherwise there will be no sound or low sensitivity.
First install the oscillating coil and switch, then pass the electret wire and the battery positive and negative wires through the battery case, solder on the circuit board, the battery case spring is at one end and the pole piece is at the positive side; at the TX, Soldering transmit antenna
Send Message to us:
Due to the variety of electronic components we operate, we can't upload them one by one. If you can't find the model you need in our shop, please contact us and we will quote the first time.
*Well and high quality control
*Prompt delivery
*Small order acceptable
*Perfect craft procedure
*Customer's designs are welcome
Thank you for all your supports |