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The Eelectron SO08L02KNX-3 is the OL-U LITE KNX wall switch with 8 mechanical buttons (16 channels) in black. It is the pre-assembled, fixed-finish member of the OL-U family: keys are fitted at the factory, LEDs are white, the central bar is a static RGB indicator rather than a swipe sensor, and the matching unpainted PO71 "RP" cover frame completes it. The result is the OL-U form factor and ETS application at a price point that works for hotel floors, student housing, multi-family and office fit-outs.
Every key is assigned in ETS: on/off, dimming, shutters and blinds, scenes, sequences, thermostat setpoint and mode, or any other KNX function. The thermostat has a PI controller for heating and cooling with valves, 6-way valves and 2- or 4-pipe fan coils, fed by the on-board temperature sensor; 32 logic blocks cover logical, threshold, algebraic and conditional expressions plus proportional control and dew-point calculation.
For hospitality the device carries Eelectron's Virtual Holder logic: a magnetic door contact on a digital input, combined with other sensors on the bus, lets the device infer whether the room is really occupied and tell unexpected presence from a guest's return, which does the job of a keycard holder. The device supports KNX Data Secure and includes the bus coupler.
It mounts on a 2- or 3-module box (Italian 502/503, German, British or Swiss) via the FO71A01 metal frame, and the OL-U plate system lets neighbouring receptacles share the same finish.
| Power supply | Via KNX bus, 21–32 V DC |
| Current consumption | max 30 mA |
| Buttons / channels | 8 mechanical buttons / 16 channels |
| Indicators | white LED per key + RGB bar |
| Thermostat | 2-stage with PI controller; heating/cooling, valves, 6-way valves, 2- and 4-pipe fan coils |
| Temperature sensor | -5 to +55 °C (23 to 131 °F), resolution 0.01 °C, tolerance ±0.5 °C typ. |
| Logic | 32 logic blocks; Virtual Holder logic |
| Group addresses / associations | 600 / 700 |
| Mounting | Flush-mounted 2- or 3-module wall box via FO71A01 metal frame |
| Enclosure | PC-ABS plastic, IP20 (EN 60529) |
| Device dimensions | 71 x 71 x 25 mm (2.80 x 2.80 x 0.98 in) |
| Cover frame size (not included) | 2-module 92 x 92 x 11 mm (3.62 x 3.62 x 0.43 in); 3-module 130 x 92 x 11 mm (5.12 x 3.62 x 0.43 in) |
| Operating temperature | -5 to +45 °C (23 to 113 °F); storage -20 to +70 °C; RH max 90% non-condensing |
| Device weight | approx. 53 g (0.12 lb); packed 0.13 kg (0.29 lb) |
| Standards | EN 63044-3, EN 63044-5-1, EN 63044-5-2, EN 50491-2; LVD 2014/35/EU, EMC 2014/30/EU |
| Certification | KNX certified; KNX Data Secure |
| ETS application | Eelectron ETS application (download from eelectron.com) |
| Scope of delivery | Device, KNX bus terminal, pair of fixing screws — keys pre-fitted |
| Manufacturer part no. / GTIN | SO08L02KNX-3 / 8054144523071 |
LITE siblings: SO08L02KNX-1 (white), SO04L02KNX-1 / -3 (4 buttons). Full-feature version: SO08A01KNX. Cover frames: PO71A01RP-3 (2-module), PO71A03RP-3 (3-module); matching Lite socket frames PO45A01RP-3, PO45A03RP-3, PO55A01RP-3. Metal mounting frames: FO71A01-2M, FO71A01-3M (10-packs FO71A02-2M / -3M). Surface boxes: SFBOA17-3, SFBOA25-3. Companion OL-U devices: TO04A01KNX thermostat, HO04A01KNX humidistat, MO04A01KNX-x multisensor.
CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.
Datasheet (PDF) · Available to order.
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