UP 251/11 KNX Motion Detector WALL White 5WG1251-2AB11
This wall-mounted KNX motion detector brings comprehensive occupancy sensing to locations where ceiling installation is impractical — stairwells, corridors, hallways. Featuring a 180° wide-angle PIR lens with frontal coverage up to 18 meters and lateral reach of 4–14 meters, it captures motion along elongated spaces that ceiling units cannot cover. Three sensors provide brightness for constant-light control, temperature for HVAC ventilation, and humidity for dew-point monitoring.
Technical Specifications
| Protocol |
KNX TP, S-Mode ETS; PIR wall-mounted; 180° wide frontal coverage |
| Detection Range |
Up to 18 m frontal, 4–14 m lateral (angle-dependent) |
| Channels |
4 movement channels; outputs: on/off, dimming, scene recall per channel |
| Modes |
Automatic or semiautomatic; parallel multi-detector possible |
| Brightness Function |
Configurable threshold/offset; day/night triggers |
| Temperature & Humidity |
2 thresholds each; dew-point alarm; comfort field output |
| HVAC Function |
Room modes (comfort/standby/economy); twilight option |
| Special Functions |
Sabotage detection; AND/OR/EXOR logic; integrated pushbutton override; LED motion test |
| Power |
Integrated bus coupler; KNX bus voltage operation |
| Mounting & Physical |
CEE/DE flush box at 1.10 m height; White; IP20; 80x80x50 mm; Warranty 24 Months |
Applications
Stairwells, fire escape corridors, hotel hallways, parking passages, office zones where ceiling placement would miss motion or architectural constraints demand wall mounting. Combines lighting automation, HVAC signaling, dew-point protection, and local override in one device.