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The Eelectron IO44D02KNX-S is a flush-mount KNX pushbutton interface with 4 dry-contact inputs and 4 LED outputs in a 34 x 34 x 11 mm housing that fits in any wall box behind a conventional switch or pushbutton. It is the KNX Data Secure version of the IO44D02KNX, for projects that require encrypted group communication from the room level up.
Each input can send switching, dimming, shutter, scene or sequence commands with short/long press detection, the LEDs can follow bus objects or local state, and 16 logic blocks with the Virtual Holder presence function run inside the module. Connection is through a 12-way AWG24 wired connector, and bus consumption stays below 5 mA.
| Power supply | Via KNX bus, 21–31 V DC (SELV) |
| Current consumption | ≤ 5 mA |
| Inputs | 4 dry-contact; scanning 3.3 V DC; max cable 10 m (33 ft) |
| LED outputs | 4; 0.5 mA at 3.3 V |
| Security | KNX Data Secure |
| Logic blocks | 16 |
| Connection | 12-way wired connector, AWG24 |
| Group addresses / associations | 240 / 280 |
| Mounting | Flush-mount box; DIN rail with IOxxD01ACC |
| Dimensions | 34 x 34 x 11 mm (1.34 x 1.34 x 0.43 in) |
| Enclosure | IP20 (EN 60529) |
| Operating temperature | -5 °C to +45 °C (23 °F to 113 °F) |
| Storage temperature | -20 °C to +55 °C (-4 °F to 131 °F) |
| Relative humidity | max 90 % non-condensing, indoor use |
| Standards | EN 63044-3; EN 63044-5-1 / EN 63044-5-2; EN 50491-2; LVD 2014/35/EU; EMC 2014/30/EU |
| Certifications | KNX certified; CE |
| ETS application | IO44D02KNX-S pushbutton interface application with Data Secure |
| Weight (net) | 0.04 kg (0.09 lb) |
| Manufacturer part no. / GTIN | IO44D02KNX-S / 8054144523156 |
Other versions: IO22D02KNX, IO44D02KNX, IO62D02KNX (2 in / 2 LED; 4 / 4; 4 / 4 secure; 6 in / 2 LED). DIN-rail adapter: IOxxD01ACC. With NTC probe inputs: AD84C01KNX; with relays and BLE beacon: IO42E01KNX.
CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.
Datasheet (PDF) · Available to order.
Orders over $500 ship free within the USA (under 50 lbs). Orders under $500 carry a low cost shipping fee.
Most in-stock orders ship within 1–2 business days from Miami, FL. Delivery typically takes 3–5 business days depending on destination.
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