Description
Keyscan USB-SER USB Communication Adapter – RS-232 / RS-485 to USB Converter
The Keyscan USB-SER USB Communication Adapter provides a convenient communication interface between a computer and compatible Keyscan access control equipment. Designed for systems where the computer does not have a traditional serial COM port, the USB-SER converts both RS-232 to USB and RS-485 to USB communication in one compact device.
Ideal for system technicians, laptop programming, service calls, temporary programming connections and single access control unit applications, the Keyscan USB-SER adapter allows compatible Keyscan controllers and communication equipment to connect through a standard computer USB port without requiring a built-in serial interface.
Key Features
- Keyscan USB-SER communication adapter
- Converts RS-232 to USB communication
- Converts RS-485 to USB communication
- Provides Keyscan system compatibility through a computer USB connection
- Powered directly through the computer's USB port
- Compatible with USB 1.1 and USB 2.0
- Designed for single ACU communication applications
- Useful for laptop programming and system servicing
- Ideal when the computer does not have an available serial COM port
- Includes a 6 ft (1.8 m) USB extension cable
- Clear protective sleeve provides electrical isolation while allowing TX and RX LEDs to remain visible
Product Details
| Manufacturer | Keyscan |
| Part Number | USB-SER |
| Product Type | USB Communication Adapter |
| Conversion | RS-232 to USB / RS-485 to USB |
| USB Compatibility | USB 1.1 / USB 2.0 |
| Power | Powered through computer USB port |
| Application | Single ACU communication and programming |
| Included Cable | 6 ft (1.8 m) USB extension cable |
RS-232 and RS-485 to USB Communication in One Adapter
The Keyscan USB-SER communication adapter combines RS-232 and RS-485 conversion capabilities in a single device, giving installers and service technicians greater flexibility when connecting compatible Keyscan access control hardware to a modern computer.
This is particularly useful when servicing access control systems with a laptop or replacing an older computer that included a built-in serial port. Rather than relying on a dedicated serial interface, the USB-SER allows communication through a standard USB connection while maintaining compatibility with supported Keyscan system communication methods.
Ideal Applications
- Keyscan access control system programming
- Single ACU communication
- Laptop-based controller programming
- Access control service and maintenance
- Temporary programming connections
- Computers without serial COM ports
- Technician service kits
- On-site Keyscan system troubleshooting
- Demonstration and commissioning applications
Why Choose the Keyscan USB-SER?
- Supports both RS-232 and RS-485 communication
- Eliminates the need for a built-in computer serial port
- USB-powered design requires no separate power supply
- Compact and convenient for field technicians
- TX and RX LEDs provide visible communication activity
- Includes USB extension cable for installation flexibility
- Designed specifically for compatible Keyscan access control applications
USB-SER Communication Options
| Connection | USB-SER Support | Typical Keyscan Application |
|---|---|---|
| RS-232 to USB | Yes | Local single-ACU communication or programming |
| RS-485 to USB | Yes | Longer-distance compatible Keyscan communication applications |
| USB Power | Yes | Portable laptop and service applications |
Keyscan System Communication
Keyscan documentation identifies the USB-SER as an option for communication between a PC and compatible Keyscan access control units when a traditional serial port is unavailable. When used for RS-232 communication, Keyscan documentation lists a maximum communication distance of approximately 100 ft (30.5 m). For supported RS-485 communication, Keyscan lists distances up to approximately 2,000 ft (609.6 m), depending on the system design and required wiring.
For system installation, programming and communication wiring, always follow current Keyscan technical documentation and confirm compatibility with the specific controller, communication board and software configuration being used.
Convenient USB Communication for Keyscan Access Control Systems
The Keyscan USB-SER USB communication adapter provides a practical solution for connecting compatible Keyscan access control equipment to modern computers and laptops that do not include a serial communication port. With both RS-232 and RS-485 conversion, USB-powered operation and a compact technician-friendly design, the USB-SER is an essential communication accessory for compatible Keyscan programming, commissioning and service applications.
While we strive to provide accurate imagery, product photos may not reflect the exact model or configuration offered. Please refer to the product description and part number for details, or contact us for assistance before ordering.
