Multi-way lighting should be straightforward. But on site, it is often one of those jobs that creates unnecessary frustration.
Maybe there is no 3-core and earth available. Maybe you are working on a retrofit where cable routes are limited. Or maybe the customer wants additional switching points without turning a simple job into a disruptive rewire.
That is where the Theben OKTO 540 BN comes in.
The OKTO 540 BN is a compact, flush-mounted electronic latching relay designed to make multi-way lighting control simpler, quieter and more flexible. It allows one lighting circuit to be switched from multiple push-buttons, helping installers deliver practical lighting control without the usual complexity of traditional two-way and intermediate switching.
Get the OKTO 540 from your local wholesaler
Buy the OKTO 540Multi-wayswitching without the usual wiring headaches
For electricians, one of the key benefits of the OKTO 540 BN is its ability to simplify multi-way lighting circuits.
Instead of relying on traditional 3-core and earth between switch points, the relay handles the switching logic. This means installers can create multi-point control using retractive push-buttons, helping to reduce cable runs, simplify installation and make retrofit work more manageable.
That makes it especially useful for:
- Hallways
- Staircases and landings
- Bedrooms
- Open-plan living spaces
- Extensions and renovations
- Small commercial areas
- Anywhere a light needs to be controlled from several points
For retrofit projects, this can be a real advantage. Less chasing. Less disruption. Fewer compromises. And a neater solution for both installer and customer.
Watch a video, over on our YouTube channel showing how easy the OKTO 540 is to install where traditional wiring is not practical. Less disruption, less rework, cleaner finish: https://youtube.com/shorts/3CFrQ2d3uvs?si=IcBdsGhdFaSorqhx
Compact enough for tight spaces
The OKTO 540 BN has been designed with practical installation in mind.
At just 32.7 x 26.6 x 9.6 mm, it is ultra-compact and suitable for flexible installation in tight locations, including flush-mounted boxes, luminaires and furniture. For electricians working in real-world conditions, where space is rarely generous, that small footprint matters.
Pre-assembled cables also help support quick and secure installation, reducing time on site and making the device easier to work with.
Quiet switching for modern homes
Mechanical switching noise can be distracting, especially in domestic environments. Bedrooms, hallways, hotels and care settings all benefit from quieter operation.
The OKTO 540 BN is designed for particularly quiet switching, making it a strong choice where comfort matters as much as control.
For homeowners, that means lighting that works smoothly in the background. For installers, it means a more refined finish to the job.
LED-friendly performance
Modern lighting installations are increasingly built around LED technology. While LEDs offer excellent efficiency, they can also introduce challenges if the wrong switching equipment is used.
The OKTO 540 BN supports LED loads up to 150 W and uses zero-crossing switching. This helps reduce stress on lamps and supports dependable switching performance across suitable lighting loads.
It also has a low standby consumption of around 0.2 W, supporting energy-conscious installations without adding unnecessary complexity.
A simple solution with wide application
The OKTO 540 BN is not about overcomplicating lighting control. It is about solving a common installation challenge in a smarter way.
For electricians, it offers:
- Multi-way lighting control from several push-buttons
- A practical alternative where 3-core and earth is not available
- Compact flush-mounted installation
- Particularly quiet switching
- LED-friendly zero-crossing switching
- Low standby consumption
- Pre-assembled cables for quicker installation
For customers, the result is simple: convenient lighting control from the places they need it, without unnecessary disruption.
Installer-first lighting control from Theben
At Theben, we believe good technology should make life easier on site as well as in use. The OKTO 540 BN reflects that approach.
It is compact, practical and designed around everyday installation challenges. Whether you are working on a retrofit, an extension, a staircase, or a modern LED lighting scheme, it gives you a simple way to deliver flexible multi-way lighting control.
No 3-core? No problem.
With the OKTO 540 BN, multi-way lighting just got simpler.