Sell ✓Ghxamp Silicon Microphone Digital Mic Amplifier Board Clearer Pickup For Hearing Aids Conference Mi best price

Silicon Microphone With High signal to noise ratio, clearer pickup, good effect. Gain adjustable. Wide range of uses:such as hearing aids, pickups, conference microphones and more. R5 is the gain adjustment resistor, the resistance can be used 4.7k-100k (chip resistors next to set aside the plug-in pad, if there is no patch resistance or welding technology is not good, you can use the plug-in resistor), the greater the resistance , The higher the gain. Basic parameters: Working voltage: DC 3v-6v Board size: 16mm * 15mm The default gain: 40db (you can also adjust the gain, change the resistance of R5 can be) Package 1pc Precautions: *** "Pre-sale" ***The products are shipped abroad, and the logistics time limit is generally about 15 days. If you mind, please don't place an order &&&Pre-sale products as long as they are shipped overseas, please do not refuse to sign at will, thank you very much for your understanding! Please pay attention to the store coupons and receive them before placing an order!