Key facts
- Manuals
- 6
- Languages
- ZH
- Last added
- 2026-10-03
Featured Yav manuals

Yav 8J Relay Control Card Technical Manual
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.
Covers: Quick Start · Product Overview · Technical Specifications · Relay Output · Communication Protocol · Hardware Features

Yav Smart V 2AD Data Acquisition Card User Manual
The Smart V 2AD is a multi‑function data acquisition card with two analog and two digital input channels, RS485 communication, and optional temperature, humidity, PWM, encoder and compass functions. It operates on a 16‑24 V DC supply and supports Windows XP through Windows 10 with Yav’s software platforms.
The manual provides hardware specifications, wiring diagrams, software setup instructions, performance tests, safety guidelines, and detailed troubleshooting steps to help users install, configure, and maintain the device safely and effectively. This manual is written in Chinese.
Covers: Quick Start · Hardware Features · Analog Input · Digital Input · Communication Protocol · Performance Test

Yav YAVUSB8IO Industrial High-Speed IO Card Technical Manual
The YAVUSB8IO is an industrial high‑speed IO card with 8 digital inputs and 8 digital outputs, supporting multiple communication methods such as USB, RS232, RS485, Wi‑Fi, GPRS, ZigBee, Bluetooth and 433 MHz wireless. It operates on a DC 12‑24 V supply (24 V recommended) and works with Windows XP/7/8/10 via a driver‑less USB interface.
The manual provides a quick‑start guide, detailed hardware specifications, wiring diagrams, communication protocol information, application examples, performance tests, safety notes, and a troubleshooting section. It also lists protection mechanisms, mechanical dimensions, and contact information for Wuhan Yav Electronics Technology Co., Ltd. This manual is written in Chinese.
Covers: Quick Start · Product Overview · Digital Input Function · Signal Wiring · Digital Output Function · Communication Protocol

YAV GWB Multifunction Data Acquisition Card Technical Manual
The YAV GWB technical manual provides a complete overview of the multifunction data acquisition card, including hardware description, analog and digital input capabilities, communication interfaces, and software support. It also lists the packaging contents, required SDK, and safety guidelines.
Detailed sections cover analog input specifications, digital input operation, RS485 Modbus communication, application examples, performance testing, and a troubleshooting guide for common issues such as connection problems and insufficient sampling speed. This manual is written in Chinese.
Covers: Quick Start · Product Overview · Analog Input Function · Digital Input Function · Communication Protocol · Application Examples
Latest Yav manuals
Yav 8J Relay Control Card Technical Manual
User Manual 28 pages · 3.1 MB · ZHTechnical manual for the Yav 8J relay control card, covering hardware specs, wiring, software, communication and troubleshooting.
Yav Smart V 2AD Data Acquisition Card User Manual
User Manual 32 pages · 3 MB · ZHUser manual for the Yav Smart V 2AD data acquisition card covering features, connections, and troubleshooting.
Yav YAVUSB8IO Industrial High-Speed IO Card Technical Manual
User Manual 36 pages · 1.8 MB · ZHTechnical manual for the Yav YAVUSB8IO industrial high‑speed IO card, covering features, wiring, communication, and troubleshooting.
YAV GWB Multifunction Data Acquisition Card Technical Manual
User Manual 34 pages · 3.1 MB · ZHTechnical manual for the YAV GWB multifunction data acquisition card, covering features, specifications, wiring and troubleshooting.
YAV V2104 Hall Current Sensor User Manual
User Manual 16 pages · 1.7 MB · ZHThe YAV V2104 Hall current sensor user manual provides an overview, specifications, installation, wiring, safety, and troubleshooting information.
Yav YAVM2M Modbus Multi‑Brain Integrated Repeater Technical Manual
User Manual 29 pages · 1.3 MB · ZHTechnical manual that details features, specifications, hardware, communication protocols, installation and troubleshooting for the YAVM2M Modbus…
Which document do I need?
User Manual
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in Yav manuals
What software is required to operate the Yav 8J relay control card?
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.
Which communication interfaces are supported by the Yav 8J?
It supports RS232, RS485, Wi‑Fi, GPRS, Bluetooth and ZigBee interfaces.
How many analog input channels does the Smart V 2AD have?
It provides two single‑ended analog input channels.
What is the default input voltage range for the analog channels?
The default range is DC 0 V to 10 V.
How many digital input channels does the YAVUSB8IO have?
The card provides eight digital input channels.
From: Yav YAVUSB8IO Industrial High-Speed IO Card Technical Manual
What supply voltage is recommended for the YAVUSB8IO?
It operates on DC 12‑24 V, with 24 V recommended.
From: Yav YAVUSB8IO Industrial High-Speed IO Card Technical Manual
