About
Hornby HM7000 is Hornby's flagship wireless DCC (Digital Command Control) solution for model railway enthusiasts. The system pairs Bluetooth-enabled DCC decoders — installed directly into HO/OO and TT:120 gauge locomotives — with a free companion app for iOS and Android, enabling full wireless control from a smartphone or tablet without the need for a traditional controller or wired command station. Once set up, users can independently drive multiple locomotives on the same layout, adjusting speed and direction, toggling lights, and triggering sound functions (on sound-equipped decoders) all from one intuitive mobile interface. HM7000 decoders are also fully compatible with conventional DCC controllers, so the system integrates seamlessly into existing layouts and command stations. The Hornby DCC App provides a clean, user-friendly dashboard that simplifies programming, function mapping, and multi-loco management — making it accessible for beginners while retaining the depth experienced modellers expect. The HM7000 range covers a growing library of Hornby locomotives across multiple eras, and the decoder hardware supports firmware updates to add features over time. Ideal for hobbyists looking to modernise their layouts, introduce younger family members to model railways, or reduce cable clutter, HM7000 represents a natural evolution of the classic Hornby experience into the wireless age. The app is free to download; costs are associated with purchasing HM7000-equipped locomotives or retrofit decoder chips.
Key Features
- Bluetooth Wireless Control: Bluetooth-enabled DCC decoders let you drive locomotives wire-free directly from your smartphone or tablet.
- Free Hornby DCC App: A dedicated iOS and Android app provides a clean dashboard for speed, direction, lighting, and sound function control.
- Multi-Loco Management: Control multiple locomotives independently on the same layout from a single device.
- Standard DCC Compatibility: HM7000 decoders work alongside conventional DCC command stations, making integration into existing layouts straightforward.
- Sound & Function Support: Sound-equipped HM7000 locomotives allow in-app triggering of authentic locomotive sounds and lighting functions.
Use Cases
- Hobbyists modernising an existing OO or TT:120 gauge layout with wireless smartphone control.
- Families introducing younger enthusiasts to model railways through an intuitive app-based interface.
- Experienced modellers who want to reduce wiring complexity and eliminate handheld controllers from their setup.
- Club layouts where multiple operators want to independently drive separate locomotives from their own devices.
- Collectors who want sound and lighting functions controllable via a single app without purchasing a dedicated sound controller.
Pros
- No Wired Controller Required: Eliminates the need for a traditional DCC handset, reducing desk clutter and lowering the barrier to entry for beginners.
- Free App: The companion app is free to download for both iOS and Android, keeping ongoing software costs at zero.
- Backwards Compatible: Works alongside existing DCC infrastructure, so enthusiasts can adopt HM7000 gradually without replacing their whole setup.
Cons
- Hardware Purchase Required: Full functionality requires buying HM7000-equipped locomotives or separate retrofit decoder chips, which adds cost.
- Bluetooth Range Limitations: Wireless control is subject to typical Bluetooth range and interference constraints, which may affect very large layouts.
Frequently Asked Questions
What is the Hornby HM7000?
The Hornby HM7000 is a Bluetooth DCC system consisting of wireless decoders fitted to model locomotives and a free smartphone app, enabling wireless control of model trains without a traditional wired controller.
Is the Hornby DCC App free?
Yes, the Hornby DCC App is free to download on both iOS and Android. Costs relate to purchasing HM7000-equipped locomotives or HM7000 retrofit decoders.
Can I use HM7000 with my existing DCC controller?
Yes. HM7000 decoders conform to DCC standards and are compatible with conventional DCC command stations, so you can integrate them into an existing layout.
Which gauges does HM7000 support?
HM7000 is available across Hornby's OO gauge and TT:120 gauge locomotive ranges, with the product library expanding each year.
How many locomotives can I control at once with the app?
The Hornby DCC App supports independent control of multiple locomotives simultaneously, allowing you to manage an entire layout from one device.
