The manual introduces the product features, electrical parameters, operating instructions, SD card content and key corresponding relationship of the BUS voice prompter produced by Guangzhou Weichuang Technology Co., Ltd. WAYTRONIC
The BUS voice reminder is a bus‑mounted audio alert unit that can play AD4 and WAV voice files from an SD card, output mono audio, and control external equipment via two signal outputs. It features five‑level volume control, LED power indication, and a microphone for live announcements.
The manual explains how to connect the power wires (red to VCC, brown to GND), insert an SD card (32 MB‑1 GB), select voice files with the numeric keys, and adjust volume using the * and # keys. It also details the signal output pins (S1, S2) and microphone operation for on‑board announcements. This manual is written in Chinese.
| Working voltage | DC12 ~ 24V |
|---|---|
| Audio power | 0.5W / 8Ω |
| Audio channel | Mono |
| Volume levels | 5 levels |
| SD card capacity | 32 MB – 1 GB |
| Maximum voice files | 510 files |
| Supported audio formats | AD4 (6 kHz‑32 kHz, 36 kHz) and WAV (6 kHz‑16 kHz) |
| Signal output S1 | Low‑level (VCC) during playback |
| Signal output S2 | High‑level (VCC) during playback |
It operates on a DC input voltage of 12 V to 24 V.
The device can directly play up to 510 voice files from the SD card.
Press the * key to increase volume and the # key to decrease volume.
It supports AD4 files with sample rates 6 kHz‑32 kHz (including 36 kHz) and WAV files with sample rates 6 kHz‑16 kHz.