Dev Docs
SDK, API, communication protocols, integration samples
Technical Docs
Find communication protocols, dev SDKs, config tools, product manuals and firmware by product line — all in one place.
Documents
Vguang technical-docs center serves developers and integrators with guides on platform integration, terminal access, firmware upgrade, selection and compliance.
- Docs cover integration flow, interface forms, code samples and installation notes, paired with product manuals and open API docs.
- Dev docs explain private deployment and secondary development.
- Selection docs advise face / QR / turnstile / platform mixes by scenario.
- Compliance docs list FCC / CE / RoHS / IP67 certifications; filter by category below.
Product Resources
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Browse by Category
Manuals
Installation, wiring and commissioning manuals for each hardware
Selection Guides
Parameter comparison and scenario-based selection
Compliance
FCC / CE / RoHS / IP ratings, patents and test reports
Firmware
Terminal firmware packs, upgrade tools, platform clients
Video Tutorials
Installation demos, integration walkthroughs, debugging videos
Why DejaOS
Side-by-side comparison of DejaOS vs mainstream options to clarify the difference before you choose
Online Tools
Online utilities, no installation needed — scan and use
Document center25 / 25
Dev Docs指南中EN
General Platform Integration Guide
Overview of how the Vguang cloud platform integrates with existing HR, property, one-card and visitor systems, plus data-sync mechanics.
Read onlineOnline Tools工具中EN
Time Calibration QR Tool
Generate a signed system-time QR code online for devices to scan and calibrate their clock; auto-refreshes every second, no installation needed.
Use OnlineOnline Tools工具中EN
UTC Time Calibration QR Tool
Generate a signed time QR code based on the UTC timezone for devices to scan and calibrate their clock; auto-refreshes every second, no installation needed.
Use OnlineOnline Tools工具中EN
WiFi Config QR Tool
Generate a signed WiFi provisioning QR code online: devices scan it to join the target network automatically, with optional device admin password change.
Use OnlineDev DocsAPI中EN
Face Recognition Terminal API
Recognition modes, matching interfaces and platform-integration notes for face terminals, fitting turnstile, access and attendance scenarios.
Read onlineDev DocsSDK中ENEN
QR Scan Module Dev Kit
Secondary-development guide for embedded QR scan modules: interface forms, output protocols and installation notes; with 5 SDK packages — USB Java / C# / C-CPP / Android and browser (protocol mode) — ready to download.
Read onlineManualsAPI中EN
Device Management Platform API
Remote control, centralized audit and firmware-upgrade capabilities of the device management platform.
Read onlineSelection Guides选型中EN
Product Selection Guide
Quick selection advice — face, QR, turnstile and platform combinations by scenario (rail / park / healthcare / campus / community).
Read onlineCompliance合规中EN
Certifications & Compliance
FCC / CE / RoHS / IP67 plus patents, software copyright and environmental / quality management certifications.
Read onlineDev Docs指南中EN
Developer FAQ
Common Q&A on integration, private deployment, customization and secondary development.
Read onlineFirmware固件中EN
Face Terminal Firmware Pack
Latest firmware pack for VF-series face terminals (recognition algorithm + system components) for on-site batch upgrade.
Firmware固件中EN
Firmware Upgrade Tool
Cross-platform firmware upgrade client with single/batch mode, resume and upgrade-log export.
Firmware工具中EN
Reader Config Tool (TX Series)
Windows config tools for TX-series readers/scanners: VGConfigTool V2.3.20 and the ToolContent pack (with product manual), plus legacy USB / serial config tools.
Direct downloadVideo Tutorials手册中EN
Face Terminal Installation Demo
Hands-on video for wall/pole mounting, electrical wiring and first-power-on commissioning.
Read onlineVideo TutorialsSDK中EN
QR Module Integration Demo
QR300 scan-module secondary-development with self-service terminals: serial output and sample walkthrough.
Read onlineSelection Guides选型中EN
Campus & Enterprise Access Selection Guide
Pick face terminals, turnstiles, elevator control and platform by building/campus scale and footfall, with one-card and visitor integration in mind.
Read onlineSelection Guides选型中EN
Metro & City-scale Passage Selection Guide
City-scale projects prioritize high concurrency, IP67 protection and platform integration — turnstile modules plus custom scanners.
Read onlineDev DocsSDK中EN
DejaOS Platform Developer Guide
DejaOS is Vguang’s application operating-system platform for smart devices (built on custom Linux, integrating QuickJS with the LVGL/dxUi graphics framework). This guide covers developer access paths, the Widget subprotocol and cloud open-API integration samples.
Read onlineDev DocsSDK中EN
DejaOS Developer Templates & Samples
Turn Vguang hardware capabilities (QR recognition / face 1:N / access events / Widget) into reusable, citable developer templates and samples, building on the P1-2 developer docs.
Read onlineWhy DejaOS对比中ENEN
DejaOS vs LVGL: UI Library or Smart Terminal App Platform?
Clarifying the relation and boundary between DejaOS and LVGL: LVGL is an excellent embedded GUI library; DejaOS is a JavaScript app platform for embedded-Linux smart terminals. They are an inclusion / upper-layer packaging relation, not a competitor replacement.
Read onlineWhy DejaOS对比中ENEN
DejaOS vs SALTO: Four-layer Open Platform Comparison
Comparing DejaOS and SALTO across four layers — device, protocol, SaaS app and cloud API — on access-control openness: SALTO opens at the cloud business layer, while DejaOS opens hierarchically from device to cloud.
Read onlineDev Docs协议中
Reader Product Protocol Documents
Protocol documents for reader / scanner products: MC51 network interface protocol, QR scanner communication protocols (v3.3 / v2.10 / v2.8), RS485 multi-drop protocol and the network device interface specification - pick the version that fits your device and integration.
Direct downloadDev Docs协议中
Face Terminal Protocol Documents
Protocol documents for face terminals (VF10X / VF106 series): HTTP protocol, MQTT protocol, serial communication protocol and the authorized passcode mechanism - pick the version that fits your integration.
Direct downloadDev DocsSDK中
Face Terminal Development SDK
Android development SDK and sample projects for face terminals (VF10X / VF106 series): VF106 test tools sample (with card reading, fingerprint, QR scanning modules) and face recognition SDK sample (based on Baidu Face SDK, with liveness detection, 1:N matching), ready to import into Android Studio and compile.
Direct downloadDev Docs指南中EN
Dev-Board End-to-End Validation (Visitor Access HowTo)
Developer end-to-end acceptance steps on the dev board: from simulated visitor booking, scan/call lookup, confirmed opening and result sync to offline failover and backfill after recovery — verify the visitor access chain step by step.
Read onlineRecent updates
- v1.0Dev-Board End-to-End Validation (Visitor Access HowTo)Updated 2026-10-19
- v1.0.0–v1.0.22Face Terminal Protocol DocumentsUpdated 2026-09-11
- v1.0Face Terminal Development SDKUpdated 2026-09-11
- v1.0Time Calibration QR ToolUpdated 2026-09-09
- v1.0UTC Time Calibration QR ToolUpdated 2026-09-09
RESOURCE CENTER
Resource Center
White papers, selection guides and compliance lists — one click away
Industry Solution White Paper
Metro / park / healthcare / campus cases with selection guidance.
Product Selection Guide
Spec comparison and scenario fit across eight product families.
Direct downloadROI Calculator
Template to estimate the payback of access-digitization by benefit and cycle.
Direct downloadTechnical support
Get samples, custom development and remote technical support