Self-monitoring detectors for the FDnet line with ASAplus technology, Smoke Entry Supervision, and DFTtechnology, reducing false alarms and enabling predictive maintenance without disrupting site operation.
Technical Specifications
| FDOT251 / FDOT251-S | Multi-sensor (1 optical + 2 thermal), -S with Smoke Entry Supervision |
| FDOOT261 / FDOOT261-S | ASAplus multi-criteria (4 optical + 2 thermal), -S with Smoke Entry Supervision |
| Operating voltage | DC 12…33 V |
| Operating current at DC 32 V | FDOT251/-S: 110 µA; FDOOT261/-S: 115 µA |
| Communication | FDnet, FS20 compatibility (MP6…MP8 via Mimic mode) |
| Operating temperature | FDOT251/-S: -10…+60 °C; FDOOT261/-S: -35…+70 °C |
| Protection class (IEC 60529) | IP43 (IP44 with FDB293/FDB295/FDBZ2901 accessories) |
| Standards | EN 54-5, EN 54-7, EN 54-17, EN 54-29 |
Key Features
- Smoke Entry Supervision — Cover Detection + Grid Supervision for reliable smoke access to the chamber
- DFTtechnology — non-disruptive test, visible in Building X Fire Apps
- Mimic mode — backward compatibility with older FS20 panels, no firmware change needed
- Detector replacement without resetting parameters and without a ladder up to 8 m height
- Eco-design — recycled materials, 100% renewable energy in manufacturing
Variants
| Model | Type | Stock No. |
|---|---|---|
| FDOT251 | Multi-sensor detector | S54315-F30-A1 |
| FDOT251-S | Multi-sensor detector (SES) | S54315-F31-A1 |
| FDOOT261 | ASAplus multi-criteria detector | S54315-F10-A1 |
| FDOOT261-S | ASAplus multi-criteria detector (SES) | S54315-F11-A1 |
Applications
hospitals
data centers
hotels
car parks (exhaust-fume resistant)
clean rooms
ventilation systems