The WTV-SR recording module is a cost-effective product that is suitable for various applications such as home appliances, telephone recording, conference recording, monitoring devices, advanced toys, and teaching equipment.
The WTV‑SR V1.8 is a voice recording module that supports MIC and LINE inputs, up to 64 Mbit SPI‑Flash storage and a maximum recording time of 1600 seconds. It offers multiple control modes such as MP3, key‑to‑key, parallel, and serial interfaces, and includes software tools for loading, playing and managing audio files.
The manual provides detailed electrical parameters, pin‑out diagrams, application circuit examples, and step‑by‑step software instructions for uploading, downloading and configuring voice data. Historical version information and packaging details are also included. This manual is written in Chinese.
| Supply voltage | DC 3.3 V |
|---|---|
| Maximum external SPI‑Flash | 64 Mbit |
| Maximum voice segments | 252 segments (including fixed voice) |
| Volume control steps | 8 levels |
| Static current (IOP1, RL=32Ω) | 211 µA |
The module operates from a DC 3.3 V supply.
The module can store up to 252 voice segments, including fixed voice files.
It supports MP3, key‑to‑key, parallel, key‑record‑play, e‑book, two‑wire serial and three‑wire serial modes.