FAD-420-HS-EN Duct detector housing with base
- Use in ventilation systems with air velocities from 1.5 m/s to 20 m/s
- For the activation of fans, door controls or external display devices an optional Relay Board can be installed
- A clear section on the frosted cover allows observing the alarm LED of the integrated FAD-425-O-R Detector
- Control to prevent unwanted removal of the cover
- Easy installation of the FAD-425-O-R Detector
- Maintains LSN loop functions in the event of wire interruption or short-circuit thanks to two integrated isolators
The FAD-420-HS-EN Duct Smoke Detector with integrated FAD-425-O-R Detector detects smoke in ventilation ducts. Smoke particles in the air are reliably detected and reported to the fire panel by the LSN improved bus system.
| Operating voltage | 24 V DC (15 … 33 V DC) |
| Maximum current consumption | Approx. 0.5 mA (approx. 0.7 mA when FAD‑RB‑DIBT Relay Board is installed) |
| Electromagnetic susceptibility (EMS) | EN 50130‑4 |
| Electromagnetic emission (EME) | EN 61000‑6‑3 |
| Dimensions (H x W x D) | 16.5 x 39.5 x 11 cm |
| Material and Color | |
| Housing base | Plastic fiber reinforced, PPE + PS (UL94-V1), grey |
| Housing cover | Plastic, PC (UL94-V2), clear |
| Weight | Approx. 1.5 kg |
| Permissible air velocity | 1.5 m/s … 20 m/s |
| Permissible operating temperature | 0 °C … 50 °C |
| Permissible storage temperature | -20 °C … 80 °C |
| Permissible relative humidity | 95 %, non condensing |
| Protection class as per EN 60529 | IP 30 |
| Maximum contact load | 2 A at 30 V DC |
| Weight | 11 g |