# Sound Sensors

> Microphone modules and sound sensors: digital I2S INMP441, analog MAX4466, clap switch modules

- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Category page: https://sigmanortec.ro/en/sound-sensors
- Category: Mechatronics and IoT > Sensors and Modules > Sound Sensors
- Prices: RON, VAT included; prices and stock as of 2026-10-22 01:32 (Europe/Bucharest)

## Products (7)

### Digital Microphone Module, Original INMP441, I2S, Omnidirectional, 24-bit, 3.3V
- Page: https://sigmanortec.ro/en/digital-microphone-module-original-inmp441-i2s-omnidirectional-24-bit-33v
- Details: https://sigmanortec.ro/en/llms/p/2301.md
- Price: 44.46 RON
- Availability: In stock; 1-2 zile
- Reference: 88225 · EAN: 5941231086966
- Specifications: Input Voltage: 3.3 V

Digital MEMS microphone module INMP441 (original), omnidirectional, with 24-bit I2S output, intended for audio projects with ESP32 and other microcontrollers without a separate audio codec. Supply voltage 1.8V-3.3V, current consumption 1.4 mA, signal-to-noise ratio 61 dBA, sensitivity -26 dBFS, frequency response 60 Hz-15 kHz. Pins: VDD, GND, SCK, WS, SD, L/R for left/right channel selection.

### Digital Microphone Module, INMP441 Compatible, I2S, Omnidirectional, 24-bit, 3.3V
- Page: https://sigmanortec.ro/en/digital-microphone-module-inmp441-compatible-i2s-omnidirectional-24-bit-33v
- Details: https://sigmanortec.ro/en/llms/p/2302.md
- Price: 11.30 RON
- Availability: Out of stock
- Reference: 88226 · EAN: 5943318741232
- Specifications: Input Voltage: 3.3 V

Omnidirectional MEMS module with I2S output, ideal for audio projects with ESP32 and other microcontrollers, without a separate codec. Delivers 24-bit data for clear capture of voice and ambient sounds, has good signal-to-noise ratio and low power consumption. Operates at 1.8-3.3V , and left/right channel selection is made simply by the L/R pin.
The INMP441 Digital Microphone Module is an omnidirectional MEMS module with I2S output, designed for audio projects with ESP32 and other microcontrollers, without the need for a separate audio codec.

### MAX4466 microphone module, with amplification, adjustable gain, 2.3-5VDC
- Page: https://sigmanortec.ro/en/max4466-microphone-module-with-amplification-adjustable-gain-23-5vdc
- Details: https://sigmanortec.ro/en/llms/p/1635.md
- Price: 8.69 RON
- Availability: In stock; 1-2 zile
- Reference: 9520 · EAN: 5945422799697
- Specifications: Supply Voltage: 2.3 V; Maximum Input Voltage: 5 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.

Electret microphone module with MAX4466 amplifier, compatible with Arduino and other development boards. Supply voltage 2.4-5VDC (best performance at 3.3V), direct analog output to ADC. Gain adjustable via onboard potentiometer, from 25X to 125X, signal 200mVpp-5Vpp. Good rejection of power supply noise, suitable for FFT, voice changer and audio-reactive projects.

### Microphone module, high sensitivity, analog output
- Page: https://sigmanortec.ro/en/microphone-module-high-sensitivity-analog-output
- Details: https://sigmanortec.ro/en/llms/p/407.md
- Price: 12.38 RON
- Availability: In stock; 1-2 zile
- Reference: 33447 · EAN: 5940727863944

Microphone module with high sensitivity and analog output, suited for measuring sound level in Arduino projects and other development boards. Includes an integrated amplifier with adjustable gain and provides a stable signal for AD conversion. Operating voltage: 5VDC. Signal amplitude: VCC/2.

### Microphone module, sound sensor
- Page: https://sigmanortec.ro/en/microphone-module-sound-sensor
- Details: https://sigmanortec.ro/en/llms/p/408.md
- Price: 4.97 RON
- Availability: In stock; 1-2 zile
- Reference: 22112 · EAN: 5943746158725

Microphone module, sound sensor (ref. 22112) with integrated microphone, detects the presence of sound and provides a digital output. Operates at 3.3-5VDC, sensitivity adjustable via potentiometer. Suitable for sound-triggered automations such as alarms, lighting or Arduino projects.

### Microphone module, sound sensor, 5V
- Page: https://sigmanortec.ro/en/microphone-module-sound-sensor-5v
- Details: https://sigmanortec.ro/en/llms/p/409.md
- Price: 8.47 RON
- Availability: In stock; 1-2 zile
- Reference: 33155 · EAN: 5946248967970
- Specifications: Input Voltage: 5 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.

Microphone module and sound sensor, 5VDC power supply, with digital output DO that switches High or Low when the sound level exceeds a set threshold. Sensitivity is adjustable via a potentiometer. Suitable for detecting the presence of sound in automation and Arduino projects, with fast response and easy integration into control and monitoring circuits.

### Acoustic control switch kit, clap switch, 5V, ICSK050A
- Page: https://sigmanortec.ro/en/acoustic-switch-kit-icsk050a-kit
- Details: https://sigmanortec.ro/en/llms/p/263.md
- Price: 18.15 RON
- Availability: In stock; 1-2 zile
- Reference: 33383 · EAN: 5944555189191
- Specifications: Input Voltage: 5VDC; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.

Acoustic control switch kit (clap switch) ICSK050A, 5VDC supply. Bistable output toggles on each clap: HIGH (5V) on first detection, LOW on second. Electret microphone, two-stage amplifier (Q1,Q2), bistable flip-flop circuit (Q3,Q4), status LED, maximum sensitivity around 3kHz. Output on J2 connector, suitable for a 5V relay module or a microcontroller digital input.