ITEM NAME:New MAX9814 Electret Microphone Amplifier Module AGC Function DC 3.6-12V Fo Q1P8 New MAX9814 Electret Microphone Amplifier Module AGC Function DC 3.6-12V Fo Q1P8 Automatic Gain Control (AGC)AGC switch: when you don't answer the jumper cap, AGC function is open, connected to the jumper cap is closed (with a jumper cap) Programmable operation time.Programmable operation and release time than Low-Power Shutdown Mode Built-in 2V low-noise microphone bias.3 gain setting (40dB, 50dB, 60dB) Suitable for hearing aids, conference microphone, loudspeaker and other devices Extended temperature range-40 Celsius to + 85 Celsius Board size: 30mm*25mm Operating voltage: DC 3.6V -12V colour: red Material: plastic Package included: 1* MAX9814 Microphone Amplifier module Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..1 MAX9814 Microphone Amplifier module. Suitable for hearing aids, conference microphone, loudspeaker and other devices. Built-in 2V low-noise microphone bias.3 gain setting (40dB, 50dB, 60dB). colour: red.