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The Eelectron TO04L02KNX-3 is the LITE version of the OL-U KNX room thermostat in black: a wall-mounted controller with an integrated temperature sensor, two independent 2-stage PI thermostats, a backlit LCD and four mechanical pushbuttons configured as 8 channels, supplied pre-assembled with white-LED keys and a non-capacitive RGB status bar. It is the cost-effective room controller for hotel guest rooms, apartments and offices where temperature control and a few lighting/shade commands are needed at one wall point.
Each thermostat drives heating, cooling, valves, 6-way valves and 2-/4-pipe fan coils, so a bedroom and bathroom can be handled from one device. The 8 button channels cover on/off, dimming, shutters and blinds, scenes and sequences; 32 logic blocks and the Virtual Holder hospitality logic are included and the device supports KNX Data Secure. It mounts in a 2- or 3-module box with the FO71A01 frame. Choose MO04L02KNX if humidity and CO2 sensing are required; the white version of this thermostat is TO04L02KNX-1.
| Power supply | Via KNX bus, 21–32 V DC (SELV) |
| Current consumption | Max. 30 mA |
| Sensors | Temperature |
| Temperature sensor | −5…+55 °C (23…131 °F); resolution 0.01 °C; tolerance typ. ±0.5 °C |
| Thermostats | 2 × 2-stage with PI controller |
| Controls | 4 mechanical buttons (8 channels) with white LEDs; RGB LED bar (non-capacitive); LCD with adjustable backlight |
| Logic blocks | 32 |
| Security | KNX Data Secure |
| Group addresses / associations | 600 / 700 |
| Enclosure / protection | PC-ABS; IP20 (EN 60529) |
| Operating temperature | −5…+45 °C (23…113 °F); storage −20…+70 °C (recommended max. 55 °C); max. 90 % RH non-condensing; indoor, dry places |
| Device dimensions | 71 × 71 × 25 mm (2.8 × 2.8 × 1.0 in); 2-module frame 92 × 92 × 11 mm, 3-module frame 130 × 92 × 11 mm (frames not included) |
| Standards | EN 63044-3; EN 63044-5-1 / -5-2; EN 50491-2; LVD 2014/35/EU; EMC 2014/30/EU; KNX certified |
| Mounting | Flush wall box, 2 or 3 modules |
| Weight | 0.13 kg (0.29 lb) (datasheet: approx. 60 g) |
| Finish | Black |
| ETS application | Eelectron xO04x0xKNX application (download from eelectron.com) |
| Manufacturer part no. / GTIN | TO04L02KNX-3 / 8054144527987 |
TO04L02KNX-1 (white). Multisensor LITE with humidity and CO2: MO04L02KNX-1 / -3. Regular OL-U thermostat with capacitive swipe bar: TO04A01KNX; thermostat/humidistat HO04A01KNX. Frames FO71A01-2M / FO71A01-3M; cover plates PO71A01RP-1 / -3, PO71A03RP-1 / -3; accessories SFBOA17-1 / -3 / -4, SFBOA25-1 / -3 / -4.
CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.
Datasheet (PDF) · Available to order.
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