1-10PCS DC 3-5V Electret Microphone Preamplifier Module Gain Adjustable 5-30db
1.Adopting advantageous material, low power consumption design, strong compatibility.
2. Gain adjustable range 5-30dB, flexible to adapt to different scene needs.
3. Compact board design, small size, easy to integrate.
4. Adopt original electret amplifier chip, low noise and high sensitivity pickup.
5. Adjustable resistor to adjust the gain, easy to use, suitable for DIY projects.
Operating voltage: DC 3-5V
Gain adjustable: 5-30db
Board size: 16mm*11mm
Product Description: electret microphone amplifier board using the original electret amplifier 721 chip, gain can be adjusted by the resistance value of that adjustable resistor on the board. This is only a small signal amplification, can not directly drive the speaker, you need to add an amplifier to work.
1/4/10 x module
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