OO Hm7040: Bluetooth Legacy Dongle is a model railway accessory designed to support, enhance, or detail a layout in OO scale.
Featuring:- Electrical Component: Enables Bluetooth connectivity for compatible model railway control systems, allowing wireless operation and integration with digital control setups.
- Scale & Layout Compatibility: Designed for OO scale model railway layouts.
- Integration & Expansion: Connects to compatible control systems to provide Bluetooth functionality, expanding operational possibilities for your layout.
- Brand: Hornby
- Accessory Category: Electrical
- Included: Bluetooth Legacy Dongle
Suitable for modellers working in OO scale layouts who want to improve layout functionality by adding wireless Bluetooth control to their railway systems.
Why this accessory mattersThe OO Hm7040: Bluetooth Legacy Dongle adds wireless connectivity to compatible Hornby control systems, making it easier and more convenient to operate your model railway with modern Bluetooth-enabled devices.
How to use itConnect the Bluetooth Legacy Dongle to your compatible Hornby control system as instructed in the product documentation. Once connected, pair your Bluetooth-enabled device to the dongle to enable wireless control of your layout.

