WT2003H USB Card Module
Light‑Sensitive Playback · 6‑Level Volume · MP3 Support · Type‑C · Ultra‑Low Power
The WT2003H USB Music Module is a next‑generation voice playback module designed for premium greeting cards, gift boxes, and luxury packaging. It offers light‑sensitive playback – playing audio continuously when exposed to light and stopping instantly when covered – making it perfect for “open‑to‑play” applications. The module features a 6‑level volume control button, next‑track button, and a Type‑C port for both charging and USB disk access (drag‑and‑drop audio updates). With ultra‑low standby current (≤15µA in sleep mode) and support for MP3 files (16–320 Kbps), it delivers crisp, high‑quality audio for an enhanced user experience.
- Light‑sensitive – plays while illuminated, stops in darkness
- 6‑level volume adjustment button
- MP3 support – 16–320 Kbps bitrate
- Type‑C charging + USB disk access
- ≤15µA ultra‑low standby current
- 8Ω/0.5W speaker output
WT2003H USB Music Module Key Features
WT2003H USB Music Module Electrical Specifications
| Parameter | Value / Condition |
|---|---|
| Power Supply | Type‑C 5V/1A or 3.7V 110mAh Li‑ion battery |
| Standby Current | ≤15 µA (sleep mode) |
| Playback Current | ≤55 mA |
| Charging Current | ≤400 mA |
| Audio Format | MP3 (16–320 Kbps) |
| Speaker Output | 8Ω / 0.5W (typical) |
| Audio Loudness | ≥85dB (1 meter distance) |
| Storage | Built‑in 180KB (simulated USB drive) or external Flash |
| Playback Modes | Light‑triggered (continuous loop) / Button (single play) |
| Controls | Slide switch (on/off), Next‑track button, Volume button (6 levels) |
Volume level and audio quality depend on the source file. Actual performance may vary with different audio content.
Functional Description
| Function | Operation | Feedback |
|---|---|---|
| Slide Switch | ON = power on, OFF = power off | — |
| Next Track | Short press to play next audio file | Plays corresponding track |
| Volume Control | Short press to cycle through 6 volume levels | Adjusts playback volume |
| Type‑C Port | ON position = charge + USB disk access; OFF = charge only | Charging LED: green solid; full: LED off |
| Light Sensor | Light present = continuous loop playback; dark = stop | First audio file loops continuously |
Note: Light sensor and next‑track button are hardware‑selectable (one or the other).
Audio Copying & File Order
Important: Audio file order is determined by the copy sequence to Flash, not by file names.
- Connect the module to your computer via Type‑C (use a data‑capable cable).
- A drive will appear – format it if prompted (default size).
- Method A: Select all files, copy (Ctrl+C), then paste (Ctrl+V) into the drive. Click on the first file before copying to maintain order.
- Method B: Select files, right‑click the first file, choose “Send to” the drive. The first clicked file will be copied first.
Example: To play “Song A” first, ensure it is the first file copied to the drive, regardless of its filename.
WT2003H USB Music Module Applications
Why Choose WT2003H USB Music Module
FAQs
What is the WT2003H USB Music Module?
A high‑quality voice playback module for greeting cards and gift boxes, with light‑sensitive playback, 6‑level volume, and MP3 support.
How does the WT2003H USB Music Module light sensor work?
When light is present (e.g., the card is opened), the module plays audio continuously. When covered or placed in darkness, it stops instantly.
What is the standby current?
≤15µA, allowing for long battery life in intermittent‑use applications.
How do I change the audio content?
Connect via Type‑C, copy MP3 files to the drive in your desired playback order, then disconnect. File order = copy order.
What audio formats are supported?
MP3 with bitrates from 16 to 320 Kbps.
What power supply is needed?
Type‑C 5V/1A or a 3.7V Li‑ion battery. The module includes charging circuitry for the battery.
Can I control volume?
Yes, a dedicated button cycles through 6 volume levels.
What kind of speaker does it drive?
An 8Ω / 0.5W speaker is recommended.
Note: Light sensor and playback button are hardware‑selectable – only one function is active at a time. Use a Type‑C cable with data transfer capability (some cables are charge‑only). For mass production, file copy order determines playback sequence – always copy files in the desired order.
