| Channel | 12 independent channels |
| Payment Terms | T/T,Western Union |
| Channel Configuration | 16 independent control channels |
| Packaging Details | Carton |
| Input Type | Binary Input |
| Delivery Time | 7 Days |
| Humidityrange | 10% to 90% non-condensing |
| Features | KNX bus-powered operation |
| Installation Type | Wall-mounted or embedded |
| Timer Function | Supports scheduling and timer settings |
| Certification | CE RoHS |
| Place of Origin | EU |
| Model Number | 5WG1255-2DB21 |
View Detail Information
Explore similar products
Schneide KNX Presence Detector Dual Technology MTN6300-0019 10 mA for Building
UP 251/12 KNX Motion Detector WALL Black 5WG1251-2AB12
UP 251/11 KNX Motion Detector WALL White 5WG1251-2AB11
5WG1258-2DB33 KNX Presence Detector WIDE PIR Lux Temp Black IP54 UP 258D33
Product Specification
| Channel | 12 independent channels | Payment Terms | T/T,Western Union |
| Channel Configuration | 16 independent control channels | Packaging Details | Carton |
| Input Type | Binary Input | Delivery Time | 7 Days |
| Humidityrange | 10% to 90% non-condensing | Features | KNX bus-powered operation |
| Installation Type | Wall-mounted or embedded | Timer Function | Supports scheduling and timer settings |
| Certification | CE RoHS | Place of Origin | EU |
| Model Number | 5WG1255-2DB21 |
This KNX ceiling brightness sensor delivers precise mixed light measurement with an integrated constant light level controller for automatic daylight-harvesting dimming — no separate controller needed. Mounted compactly, it measures ambient illuminance while driving one main luminaire group plus up to four additional groups at a user-defined lux setpoint. Daylight increases cause proportional dimming; decreases cause ramp-up — saving energy with visual comfort. Self-calibration ensures accuracy. IR decoder supports S 255/11 remote.
| Protocol | KNX TP, S-Mode ETS; mixed daylight + artificial light measurement |
| Mounting | Ceiling flush box min. Ø60 mm x 40 mm depth; surface adapter optional |
| Constant Light Controller | Integrated — main group + up to 4 additional groups |
| Control Mode | Fully automatic with self-calibration included |
| Switching Output | Integrated 2-point control (switching function) |
| Lux Setpoint | Configurable per group; different zone targets |
| Calibration | Automatic; no recalibration needed |
| IR Decoder | Integrated for S 255/11 remote |
| Programming Button | Front-accessible |
| Power Supply | Integrated bus coupler; DC 21–29 V KNX bus; no external power |
| Dimensions & Certification | 88x63x88 mm; IP20; Data sheet A6V10489482; Warranty 24 Months |
Offices with window walls, classrooms, open-plan workspaces, retail stores with glazed fronts, galleries where lighting must respond to daylight conditions. Pairs with KNX dimming actuators; 2-point output for non-dimmable on/off. Values broadcast for HVAC compensation or shading control.
Company Details
Business Type:
Manufacturer,Seller,Trading Company,Exporter
Year Established:
2015
Total Annual:
800000 USD-1000000
Employee Number:
50~80
Ecer Certification:
Verified Supplier
Maituo Intelligent Technology Co., Ltd. has been a professional provider of Building and Home Automation Solutions in China since our establishment. With a focus on delivering intelligent, integrated systems for both commercial buildings and residential spaces, we have forged a strong reputation by ... Maituo Intelligent Technology Co., Ltd. has been a professional provider of Building and Home Automation Solutions in China since our establishment. With a focus on delivering intelligent, integrated systems for both commercial buildings and residential spaces, we have forged a strong reputation by ...
Get in touch with us
Leave a Message, we will call you back quickly!