USB to RS-485 Serial Converter Adapter 5-Pin Screw Terminal

This JUAA USB to RS-485 converter adapter connects any laptop or desktop USB port to RS-485 serial devices — used across CCTV (PTZ camera control), access control, biometric systems, industrial automation (Modbus RTU), energy meters, building management systems, and any equipment that communicates over RS-485. Plug-and-play on Windows with automatic driver installation, the adapter features a 5-pin screw terminal block for secure wiring and a compact transparent blue housing. If you are looking for a JUAA USB to RS-485 converter price in India with GST invoice, Thencix stocks these at our Nehru Place, Delhi store for immediate pickup or delivery. Browse our full range of cables and adapters at Thencix for all connectivity needs.

USB to RS-485 Converter — Common Uses

RS-485 is a serial communication standard used across many industries in India. Common applications include: CCTV PTZ camera control (Pelco-D/Pelco-P protocol) from NVRs, DVRs, or joystick controllers; access control panels and biometric attendance machines in offices and factories; industrial PLCs and Modbus RTU devices on factory floors; energy meters and smart grid monitoring; fire alarm panels; building management and HVAC systems; LED display signage controllers; and solar inverter monitoring. This converter bridges the gap when your controlling device — a laptop, desktop, or configuration PC — has USB ports but no native RS-485 serial port, which is the case with virtually every modern computer.

The adapter plugs directly into a USB-A port and presents a virtual COM port in Windows Device Manager. The 5-pin screw terminal block on the other end connects to the RS-485 bus wiring (typically two wires — A and B, plus ground). Once connected, any software that communicates via COM ports — whether Hikvision iVMS-4200, industrial Modbus polling tools, energy monitoring software, or custom SCADA applications — can send and receive RS-485 commands through this adapter. For CCTV installations, pair this converter with a PTZ camera from Thencix for remote pan-tilt-zoom control.

Key Features — USB to RS-485 Converter

• USB-A to RS-485 with 5-Pin Screw Terminal: Secure screw terminal connection (A+, B–, GND) for reliable RS-485 wiring — no soldering needed. Connects to PTZ cameras, PLCs, energy meters, access panels, and any RS-485 device
• Plug-and-Play on Windows: Automatic driver installation on Windows 10 and 11. Creates a virtual COM port in Device Manager. Works with CCTV software (iVMS, gCMOB, SmartPSS), Modbus polling tools, SCADA systems, and any COM-port application
• RS-485 Half-Duplex Communication: Supports RS-485 two-wire half-duplex — the standard wiring for CCTV PTZ control (Pelco-D/Pelco-P), access control panels, biometric devices, and industrial Modbus RTU
• Compact Transparent Housing: Lightweight pocket-sized adapter — carry in your tool kit for on-site configuration and commissioning jobs
• Baud Rate Support: Supports standard baud rates from 300 bps to 921,600 bps — compatible with the full range of RS-485 device speeds used in Indian CCTV and automation installations

Technical Specifications — USB to RS-485 Converter

Package Contents

• 1x JUAA USB to RS-485 Converter Adapter
• Note: USB extension cable not included. If the USB port on your PC is hard to reach, use a standard USB-A male-to-female extension cable.
• Note: RS-485 wiring not included. You will need 2-core shielded cable (typically 22 AWG or 24 AWG) to connect from the screw terminals to your RS-485 device. Use twisted pair for best noise immunity.

Ideal Use Cases

CCTV PTZ Camera Configuration: Connect your laptop to a PTZ camera’s RS-485 port during installation for address setting, protocol selection (Pelco-D/Pelco-P), and baud rate configuration. Essential for installers commissioning PTZ cameras across sites where the NVR is not yet installed.

Industrial Automation and Energy Monitoring: RS-485 with Modbus RTU is the standard communication protocol for PLCs, VFDs, energy meters, and SCADA systems in Indian factories and power installations. This adapter lets engineers poll registers, update parameters, and troubleshoot from a laptop on the factory floor without needing a dedicated serial port PC.

Access Control, Biometrics, and Building Systems: Multi-door access panels, biometric attendance machines, fire alarm controllers, HVAC systems, and LED signage controllers across Indian offices and commercial buildings use RS-485 for wired communication. This adapter provides configuration and log download capability from any USB-equipped laptop. For a complete surveillance and access control setup, explore our CCTV cameras and systems at Thencix.

Why Buy from Thencix

Thencix stocks the JUAA USB to RS-485 converter for immediate pickup at our Nehru Place, Delhi store — no waiting for online delivery when you need it on a job site today.

• In-stock for same-day pickup at Nehru Place
• 7-day replacement if dead on arrival
• Valid GST invoice with every order
• Express delivery across Delhi, Noida, Gurgaon, and Faridabad
• Pan-India delivery available
• Cash on Delivery available
• Walk-in: 109B Osian Building, 12 Nehru Place, Delhi 110019
• WhatsApp: +91 9891150949