Optimus Switches
Edge Switch
OPT-SS3300, OPT-SS1100, OPT-SS2100, OPT-SS2200 and OPT-SS1110
A frameless KNX push button with 1 to 4 keys and two RGB lights on each key, in five finishes.
Finish White
Five finishes: four plastics and stainless steel. Pick the keys below.
Keys 480 × 80 mm
No price on this page. Your bill prices it with your villa, in the finish you pick.

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No photo of this finish yet. No photo of this one yet. Our 3D model. Drag to turn it; double-click to put it back.
Optimus's picture, 1 of 3: white, 4 keys, from the front.
- Keys1 to 4 keys, or 3 tall keys
- LightsTwo RGB lights on each key
- FinishesFive finishes, with stainless steel
- PowerPowered by the KNX bus
Design and materials
A KNX push button with no frame: the keys are the whole front. Square keys work up and down, long keys left and right. Two RGB lights on each key show the state of its two functions. It runs lights and dimmers, curtains and blinds, scenes, values and the thermostat, with up to 16 functions. It takes its power from the KNX bus. Versions with a room thermostat, an air quality sensor or both are on Optimus's order code.

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No frame
The keys are the whole front: there is no frame around them, and thin gaps part the keys.
Two lights on each key
Each key has two RGB lights, one for each of its two functions, so you see the state of each side.

Stainless steel on black
The stainless steel version has brushed metal keys on a matte black base.
Where it goes
By the door of each room, on the latch side, at 1.2 m to the centre. It mounts flush, with no frame.
Specifications
01Display and system
- Model
- OPT-SS3300 (1 key), OPT-SS1100 (2 keys), OPT-SS2100 (3 keys), OPT-SS2200 (4 keys), all 80 × 80 mm; OPT-SS1110 (3 keys, 80 × 120 mm)
- Controls
- Square keys work up and down, long keys left and right; up to 16 functions: switching, dimming, curtains and blinds, values, scenes, the thermostat and logic
- Backlight
- Two RGB lights on each key, one for each of its two functions
- Thermostat
- Versions with a room thermostat (RTC), an indoor air quality sensor, or both (Optimus's order code)
02Connections
- Connection
- KNX TP (TP-S mode); powered by the bus, 21 to 30 V DC, 12 mA; programmed in ETS
03Mounting and size
- Mounting
- Flush, on a 60 mm round box, with the adapter that comes with it; no frame (to confirm for the UK-type boxes in UAE villas) to confirm
- Size
- 80 × 80 × 35 mm (85 g); 80 × 120 × 35 mm for the 3 tall keys (113 g)
- Body
- ABS (V2) housing; keys in plastic, or in stainless steel on a matte black base
- Rating
- IP20, indoors; −5 to +45 °C
- Colours
- Plastic: WH white, BL matte black, SL silver, AN anthracite. Metal: SS stainless steel. From Optimus's datasheet
04Finishes
- Finish 1
White- Finish 2
Matte black- Finish 3
Silver- Finish 4
Anthracite- Finish 5
Stainless steel
Sources: Optimus's datasheet for the OPT-SSxxxx-yyy switch sensor (version 1.0, 30 April 2025), its Edge switch page and its media pack, read on 16 October 2026.
Works with
The rest of the Optimus range on our page.
- 01
Whole home controllersEdge 8An 8-inch touch panel that stands upright for the whole KNX villa, with the intercom built in. - 02
Whole home controllersEdge 10A 10.1-inch touch panel for the whole KNX villa, with the intercom built in. - 03
SwitchesEdge Touch SwitchA KNX touch switch in black glass, with 8, 12 or 16 touch areas, each with its own colour light.