Features
1. Adopting silicon microphone with high signal-to-noise ratio, picking up sound more clearly
2. High sensitivity microphone + preamplifier circuit design
3. Built-in preamplifier board, can enhance the audio output
4. Equipped with high sensitivity microphone to accurately capture subtle sounds
5. Suitable for a variety of applications, such as hearing aids, pickups, etc.
Specification
Operating voltage: DC 3-6V
Module size: 16*15mm
Default gain: 40dB (you can also adjust the gain according to the need to change the resistance value of R5)
R5 is the gain adjustment resistor, resistance value can be used 4.7k-100k (chip resistor next to the reserved plug-in pad, if there is no chip resistor or welding technology is not good, you can use the plug-in resistor.) The higher the resistance value, the higher the gain.
Package includes
1 x Module
