Capacitive Electret Microphone—Wired 4 × 1.5 mm🎤

This compact, high-quality Electret Microphone delivers reliable audio capture for projects ranging from DIY builds to professional electronics components. With a 4 × 1.5 mm capsule and wired leads, it integrates easily with Arduino, Raspberry Pi, and other microcontroller-based systems, audio modules, and analog front-ends.

✅ Key Features

• Omnidirectional pickup pattern for consistent sound capture from all directions 🎯
• Low current consumption for battery-powered designs 🔋
• Wide working voltage range (1–10 VDC) for flexible biasing 🔌
• Compact 4 × 1.5 mm form factor for space-constrained applications 📏
• Suitable for voice detection, audio sensing, and embedded modules 🎧

⚙️ Technical Specifications

• Temperature range: -25 to +70 °C
• Relative humidity: 35% to 85% RH
• Impedance: up to 2.2 kΩ
• Current consumption: max 0.5 mA
• Directivity: Omnidirectional
• Signal-to-noise ratio (SNR): min 40 dB
• Standard operating voltage: 2 VDC
• Working voltage: 1 to 10 VDC
• Atmospheric pressure: 86 to 106 kPa
• Environmental noise: max 36 dB

🔧 Integration Tips (Arduino, Raspberry Pi, and Microcontrollers)

• Bias the microphone using a series resistor (commonly around 2.2 kΩ) from the supply within the stated voltage range.
• AC‑couple the output to your preamplifier or ADC input using a suitable capacitor.
• For best results with Arduino or Raspberry Pi, use an audio preamp or microphone amplifier module to condition the signal.
• Keep leads short or use shielded cable to minimize noise pickup.

💡 Typical Applications

• Voice detection and audio sensing for IoT devices
• Sound level monitoring and environmental audio logging
• DIY audio projects and embedded modules
• Speech-triggered controls on microcontroller platforms

📦 Package Contents

1 × Capacitive Electret Microphone, Wired, 4 × 1.5 mm