Technical manual for the Yav 8J relay control card, covering hardware specs, wiring, software, communication and troubleshooting.
The Yav 8J Relay Control Card is an 8‑channel relay module that supports multiple communication interfaces such as RS232, RS485, Wi‑Fi, GPRS, Bluetooth and ZigBee. It is powered by a 9‑24 V DC supply and includes protective features like over‑voltage, over‑current and insulation protection.
The manual provides a quick‑start guide, detailed hardware specifications, wiring diagrams, communication protocol (Modbus‑RTU), software installation instructions for Yav's SDK, YMS/WUMS platforms, and a troubleshooting section covering common connection and data issues. This manual is written in Chinese.
| Relay voltage | AC220V or DC30V |
|---|---|
| Relay current | AC10A or DC5A |
| Supply voltage | DC9‑24V |
| Communication interface | RS232 or RS485 (Modbus‑RTU) |
| Operating temperature range | -30 °C to 70 °C |
| Storage temperature range | -40 °C to 80 °C |
| Power consumption | 0.3 W |
| Relay response time | 10 ms |
The card must be used with Yav's dedicated SDK, and the YMS (serial) or WUMS (wireless) general acquisition platforms can be installed for basic operation.
It supports RS232, RS485, Wi‑Fi, GPRS, Bluetooth and ZigBee interfaces.
The device operates from a DC supply of 9 V to 24 V.