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Detect Sound and Vibration for Smarter Projects
The Voice Recognition Module V3 is a sound sensor with uart designed for sound detection, knock sensing, 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 Voltage: 4.5V - 5.5V; General Output Pins: Can generate different signals when a command is recognized.; Microphone interface: 3.5mm mono-channel microphone connector and additional microphone pin..
Why you’ll love it
- Easy wiring: 3.5mm mono-channel microphone connector and additional microphone pin.
- Useful spec: Up to 80
- Controller output: Can generate different signals when a command is recognized.
- Power range: 4.5V - 5.5V
- Current draw: <40mA
- Expected accuracy: 99%
Compare with similar products
| Product | Sensor style | Standout |
|---|---|---|
| Voice Recognition Module V3 | sound sensor with UART | Current item |
| USB Mini Microphone | pH sensor | general-purpose sensing |
| Sound Sensor LM386 | sound sensor with analog and digital output | analog output |
| Sound Sensor Analog | sound sensor with analog output | analog output |
What you can build
This sensor is a good fit for clap switches, sound meters, knock locks, machine vibration logging, and alarm triggers.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard or jumper wires for quick setup and testing.
Recommended add-ons
Useful add-ons include USB-to-serial tools, level-safe controllers, displays, and data loggers, depending on how you plan to power, mount, and log the sensor.
Technical specifications
| Product | Voice Recognition Module V3 |
|---|---|
| Microphone interface | 3.5mm mono-channel microphone connector and additional microphone pin. |
| Voice Commands | Up to 80 |
| Interface | 5V TTL UART/GPIO, 3.5mm microphone connector |
| General Output Pins | Can generate different signals when a command is recognized. |
| Voltage | 4.5V - 5.5V |
| Current | <40mA |
| Recognition Accuracy | 99% |
| Size | 31mm x 50mm |
Wiring & usage notes
Connect power and ground, then wire TX and RX to a serial-capable controller at the correct logic level and baud rate.
What’s in the box
1 × Voice Recognition Module V3
Frequently Asked Questions
What does the Voice Recognition Module V3 measure?
It is designed to measure sensor data for embedded projects.
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 UART sensor?
This version uses UART or serial output, so you connect power plus TX and RX at the correct logic level.
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.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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