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The Eelectron PD00E21KNX is the Corridor KNX presence and motion detector in white, designed for long, narrow spaces — hotel and hospital corridors, office hallways, warehouse aisles, underground car-park lanes — where a round-pattern sensor wastes most of its coverage. Two PIR sensing elements are arranged for a reach of roughly 40 m (131 ft) along the corridor and 5 m (16 ft) across at 2.5 m (8 ft) mounting height, and each element can be given its own behaviour in ETS, for example to switch luminaire groups ahead of the person walking.
An integrated illuminance sensor supports daylight-dependent and constant-light control, 5 independent presence channels serve lighting, HVAC and monitoring with different timings, and a rear connector provides 2 dry-contact inputs with the second switchable to an NTC probe for the on-board 2-stage PI thermostat. A plug-in port accepts the SM03E01/02/03 air-quality sensors. Mounting hardware for junction box and false ceiling is in the box; PD00E05ACC is the optional surface enclosure. The black version is PD00E21KNX-3.
| Power supply | Via KNX bus (bus-powered KNX device) |
| Sensing elements | 2 PIR elements, independently parameterizable |
| Detection coverage | Approx. 40 m × 5 m (131 × 16 ft) motion; approx. 16 m × 3 m (52 × 10 ft) presence, at 2.5 m (8 ft) mounting height |
| Illuminance sensor | Integrated, for lighting control |
| Inputs | 2 rear digital inputs for dry contacts; input 2 configurable as analog NTC probe input (TS01A01ACC −20…+100 °C, TS01B01ACC −50…+60 °C, TS01D01ACC −5…+45 °C) |
| Plug-in sensor port | SM03E01ACC / SM03E02ACC / SM03E03ACC |
| Presence channels | 5, independently configurable |
| Thermostat | 2-stage with integrated PI controller |
| Logic blocks | 12 |
| Mounting | Flush in European junction box, false ceiling with spring clips (68 mm / 2.7 in hole, 20–35 mm panel), or surface box PD00E05ACC (knockouts 56–80 mm) |
| Group addresses / associations | 250 / 250 |
| Finish | White |
| Weight | 0.24 kg (0.53 lb) |
| ETS application | Eelectron PD00E2x application (download from eelectron.com) |
| Manufacturer part no. / GTIN | PD00E21KNX / 8054144521619 |
PD00E21KNX-3 (same detector in black). Wide Range version with 3 elements and ø 24 m coverage: PD00E20KNX / PD00E20KNX-3. Wall-mounted corridor/hi-bay alternative: PD00E39KNX / PD00E39KNX-3. Accessories: PD00E05ACC (white) / PD00E05ACC-3 (black) surface-mounting enclosure; plug-in sensors SM03E01ACC (CO2 + temperature), SM03E02ACC / SM03E02ACC-3 (VOC + eCO2 + temperature), SM03E03ACC / SM03E03ACC-3 (CO2 + VOC + temperature). Probes: TS01A04ACC, TS01B04ACC, TS01D01ACC-1 / -3.
CE certified; not UL/NRTL listed — verify local code requirements before specifying in US installations.
Datasheet (PDF) · Available to order.
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