SU-03T Offline AI Intelligent Voice Recognition Control Module HS-S57-L

Product Description:

The SU-03T is a compact, affordable, and highly capable offline voice recognition control module that enables serial communication-based voice control without relying on cloud services or internet connectivity. Ideal for smart home applications, small appliances, toys, lighting systems, and embedded voice-controlled devices.

With support for up to 150 customizable voice commands, it allows flexible interaction with a host device via UART (TX/RX). The module integrates an offline speech recognition chip and supports user-defined voice command sets and firmware upgrades—all without writing a single line of code.

Key Features:

• Supports up to 150 voice commands

• Customizable voice commands and firmware

• No coding required – simple firmware update using USB data cable

• Offline voice recognition – does not require internet/cloud

• Recognizes wake words and volume control commands

• High sensitivity and recognition accuracy

• Built-in microphone and onboard power LED

• Compact design with standard PH2.0 4P interface

Specifications:

• Model: HS-S57-L

• Operating Voltage: 3.3V – 5V

• Interface Type: PH2.0 4P Terminal Wire

• Mounting Hole Diameter: 3.2mm / 4.7mm

• Mounting Hole Spacing: 36mm / 24mm

• Module Dimensions: 51mm × 32mm × 15mm

• Interface Pinout:

  • GND: Power ground

  • VCC: Power supply positive terminal

  • TX: Serial transmission pin

  • RX: Serial reception pin

Applications:

• Smart home automation

• Voice-controlled toys and gadgets

• Voice-enabled lamps and switches

• DIY electronics and prototyping

• Embedded systems requiring hands-free input

• Educational projects in AI and speech tech

Package Includes:

• 1× SU-03T Voice Recognition Module
  (USB cable and mounting hardware not included unless otherwise stated)

Reference Resources:

• Serial module documentation:
  http://www.hellostem.cn/?ljiliechuanganqipeijiandeng/261.html

• Learning & demo video:
  https://www.bilibili.com/video/BV1nv4y197uR

This module is ideal for both beginners and advanced developers looking for fast and reliable voice integration into embedded systems—no internet, no cloud, just fast offline voice recognition.