Smarter lighting control, no neutral required. Now with app control. Available From August 2025
The new DIMAX 540 APP B flush-mounted mini dimmer from Theben is the perfect retrofit solution for older buildings, bringing advanced smart functionality to tight spaces where neutral conductors aren’t available.
Building on the trusted performance of the DIMAX 540 plus B, this new version introduces powerful upgrades:
App-based control, Bluetooth Mesh connectivity, and smart features like scenes and astro functions. All in a tiny footprint.
Whether you’re modernising a single room or upgrading an entire building, the DIMAX 540 APP B delivers reliable, intelligent dimming without the need for major rewiring.
What’s new compared to the DIMAX 540 plus B?
Both models are ultra-compact, flush-mountable behind standard push buttons, and require no neutral conductor – making them ideal for retrofit projects. But the new DIMAX 540 APP B goes further with:
- App control: Set up and operate via smartphone
- Bluetooth Mesh: Extend range and reliability by networking multiple devices
- Lighting scenes and astro scheduling: Tailor light to how and when people live
- Advanced comfort features: Automatic night-time switch-off, energy consumption display, and time-based control
App control + Bluetooth Mesh = Effortless smart lighting
Setup and control are all done through the app, using secure and reliable Bluetooth communication.
Multiple DIMAX 540 APP B units can be linked into a Bluetooth Mesh network, allowing them to communicate and pass on signals across walls and floors.
The result? A seamless, responsive lighting system with extended range – no Wi-Fi, no hub required.
Key Features at a Glance
- No neutral required - ideal for retrofits and older wiring
- Control via app or local push button
- Bluetooth Mesh - network multiple devices for better coverage and flexibility
- Scenes, groups and astro functions - personalise lighting schedules and moods
- Handles long cable runs - up to 100 m with multiple switchesNo neutral required - ideal for retrofits and older wiring
- No neutral required - ideal for retrofits and older wiring
- Supports LEDs, halogen and incandescent lamps
- Built-in protection - temperature and overcurrent cut-off
- Ultra-compact form - fits behind standard switches
- Cost-effective and easy to install
Got a project in mind?
The DIMAX 540 APP B is ready when you are.
Visit theben.co.uk to find your local stockist