• Electret Microphone Amplifier - MAX9814 with Auto Gain Control - circuitrocks
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Detect Sound and Vibration for Smarter Projects

The Electret Microphone Amplifier - MAX9814 with Auto Gain Control is a ph sensor with analog output designed for sound detection, vibration alerts, and machine monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Supply Voltage: 2.7–5.5V; Output: Analog.

Important: Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.

Why you’ll love it

  • Main chip: MAX9814 (Maxim)
  • Useful spec: Electret condenser
  • Controller output: Analog
  • Power range: 2.7–5.5V
  • Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
  • Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards

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What you can build

This sensor is a good fit for clap switches, knock locks, vibration alarms, sound level demos, and machine monitoring.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include an Arduino or ADC-capable board, jumper wires, and a stable power source, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Electret Microphone Amplifier - MAX9814 with Auto Gain Control
Chip MAX9814 (Maxim)
Microphone Electret condenser
Output Analog
Supply Voltage 2.7–5.5V
Gain Automatic (AGC) — 40/50/60 dB selectable max
Category acoustic sound vibration sensors

Wiring & usage notes

Connect power and ground, then read the sensor output with an analog-capable input or external ADC. Stable power and a clean ground help reduce noise. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.

What’s in the box

1 × Electret Microphone Amplifier - MAX9814 with Auto Gain Control

Frequently Asked Questions

What does the Electret Microphone Amplifier - MAX9814 with Auto Gain Control measure? It is designed to measure sound level, audio activity, or optical fingerprint data.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this Analog sensor? This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.
Does it need calibration? Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

MAX9814 Electret Mic Amplifier - Auto Gain Control AGC

MAX9814 Electret Mic Amplifier - Auto Gain Control AGC

Out of stock

Product Code

2677

₱ 147.00
₱ 147.00
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