In the world of building automation ABB, is focused on the “premium touch” experience with its RoomTouch® series and customizable tacteo® glass sensors. On the other hand Schneider Electric, With the SpaceLogic™ series, SpaceLogic™ focuses on the “Dynamic Labeling” revolution, offering a digital solution to the permanent engraving/labeling problem.
Critical Notes for Integrators:
- Security: Both brands have become the standard for modern IP-connected buildings KNX Data Secure protocol.
- Sensor Integration: Integrating CO2 and VOC sensors directly into the switch unit (such as ABB Tenton®) reduces wiring complexity and device clutter on the wall.
- Hybrid Ecosystems: Schneider's Hybrid Module is a game changer in renovation projects by enabling seamless communication between the wired KNX infrastructure and Zigbee-based Wiser devices.
Technical Comparison Table: KNX Control Units
| Brand | Model/Series | Control Features | Design and Materials | Additional Features (Sensor etc.) | KNX/Zigbee Compatibility | User Interface |
| ABB | RoomTouch® 4″ | Switching, Dimming, Slider, Blinds, RGBW, Scene, Sound | Glass surface (black/white), frameless, 4″ IPS | Proximity, brightness, temperature sensors; haptic feedback | KNX Data Secure | IPS touch, 1-4 functions per page |
| ABB | RoomTouch® 5″ | Up to 30 control elements, RTC, Split Unit control | Metal frame, glass screen, HD ($720\times 1280$) | Proximity, brightness, RTC; acoustic and haptic feedback | KNX | HD touch, 1-5 functions per page |
| ABB | tacteo® KNX | Freely configurable; heating and access control | Extra flat frameless glass (9.5mm), various colors | Temperature sensor, theft protection, card reader option | KNX (Data Secure backed) | Capacitive glass, LED status, configurable symbols |
| ABB | Tenton® | Switching, dimming, louver, fan control | Surface mount, with labeling area, 4 modern colors | Models with Temperature, RTC, $CO_{2}$/Humidity sensor | KNX (Integrated bus coupler) | Large backlit display, physical buttons |
| ABB | Busch-priOn® | Centralized control; rotary element, timer | Modular; glass, stainless steel, studio white | RTC, proximity, IR receiver, motion sensor module | KNX | Swivel wheel and button combination |
| ABB | PEONIA® | Lighting, blinds, stage and fan | Flat design, switchable keys with icons | Proximity, temperature, PM 2.5/VOC/Humidity display | KNX | LCD display and capacitive touch RTC |
| ABB | Yurika | Air conditioning, underfloor heating, electric door | Frameless, physical button and LCD combination | Occupancy detection (Hotel/Hospital), PM 2.5/$CO_{2}$ | KNX | Digital labeling with LCD display (Multilingual) |
| ABB | Trevion® | Pan/Rotate, switching, dimming | 55×55, 63×63, 70×70 mm options | Animated light guide, acoustic feedback | KNX Data Secure | 2.4″ touch IPS or keypad |
| ABB | Busch-triton® | Lighting, dimming, freely programmable | 5 color options; backlit labels | Room thermostat (some models), IR receiver | KNX | Buttons with text and symbols |
| Schneider | SpaceLogic Dynamic Labeling | RGB/Color temperature control; 2-8 rockers | Merten System Design; D-Life; Multiple metallic colors | Temperature, proximity ($\leq 12$ cm), night mode | KNX Secure, Zigbee (with Hybrid) | Dynamic display, digital labeling, 50+ icons |
| Schneider | KNX Multitouch Pro | Up to 32 room functions, fan, HVAC modes | D-Life or System M compatible touch | Proximity, gesture recognition (motion), RTC | KNX | Touch screen, 3 interface design |
| Schneider | SpaceLogic Push-button Pro | 1-4 buttons; locking, temperature control | D-Life series; Thermoplastic multi-colors | Temperature, proximity (non-contact operation) | KNX (Data Secure) | Backlit icons, status LEDs |
| Schneider | SpaceLogic 4″ Touch | All in one; energy monitoring, 54 functions | Frameless, glass material, low profile | Temperature, proximity, orientation light, PIN protection | KNX (Secure backed) | 4″ LCD ($480\times 480$px), Micro USB visual upload |
| Schneider | Unica X KNX | 2-8 buttons; color temperature control | Metal/Painted; Bronze, Antique Brass, etc. | Night mode, cold/warm white LED status | KNX (Integrated bus coupler) | Flat surface, status LEDs |
| Schneider | KNX Hybrid Module | Control of Zigbee devices via KNX | DIN rail mounted, with external antenna | Maps Zigbee devices to KNX objects | KNX + Zigbee Hybrid | Control with the Wiser KNX App |
Deep Insight into Hardware Selection
1. For those looking for high resolution: ABB RoomTouch®
For projects that require a centralized “command center” in a sleek form factor RoomTouch® 5″ is unrivaled. $720 \times 1280$ HD resolution delivers the smartphone fluency that high-end residential customers expect. For engineers, the integrated RTC and the ability to directly control split air conditioners without the need for additional gateways is a big advantage.
2. Maintenance-Free Operation: Schneider SpaceLogic™
One of the biggest problems for integrators is to change the button labels when the room function changes. Dynamic Labeling Universal unit eliminates this problem by using electronic tags. If a “Guest Room” becomes an “Office”, simply update the group addresses and label text via ETS; no physical intervention is required.
3. Air Quality Experts: ABB PEONIA® and Tenton®
In modern building engineering, Indoor Air Quality (IAQ) is no longer a luxury, it is a necessity. PEONIA® and Tenton® series are characterized by integrated CO2, Humidity and even PM 2.5 / VOC sensors. This integration allows the HVAC system to react automatically when air quality degrades, without the need for separate sensors that create visual pollution on the wall.
4. The Key to Renovation: Schneider Hybrid Module
If you want to extend the system to areas where it is impossible to run a new green KNX cable, KNX Hybrid Module (LSS100400) is your best solution partner. It bridges the robustness of KNX with the flexibility of Zigbee (Wiser), allowing wireless dimmers or sensors to appear as standard objects on the KNX bus.
Pro Tip: Always BCU (Bus Coupling Unit) requirements. Models such as ABB Tenton® and Schneider Unica X come with an integrated bus coupler, saving approximately $20-$30 per point and offering ease of installation in junction boxes with little depth.
