Bosch · Detectors
Bosch FAS-420-TT2-SL Silent Two-Pipe Addressable Aspirating Smoke Detector
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Product description
FAS-420-TT2-SL is an addressable aspirating smoke detector that samples air in two-pipe systems to detect smoke. It provides a smoke level indicator and different alarm notifications. Its quiet fan makes it suitable for areas where low noise levels are important. Airflow monitoring helps detect blockages and breaks in the pipes.
Key features
- Two-pipe system connection
- Smoke level indicator and different alarm notifications
- High immunity to false alarms with intelligent signal processing
- Airflow monitoring detects blockages and breaks
- LSN loop functionality maintained by integrated isolators
- Quiet fan: 38 dB(A), down to 34 dB(A) with sound absorber
Technical specifications
| Operating voltage | 15–33 VDC |
|---|---|
| Operating temperature | -20–60 °C |
| Dimensions (H × W × D) | 292 × 200 × 113 mm |
| Weight | 1500 g |
| Input current | 250 mA |
| Auxiliary current | 210–230 mA |
| LSN current consumption | 6,25 mA |
| Relative humidity | 10–95%, non-condensing |
| Material | Plastic |
| LED indicator | Multicolour; red, yellow and green |
Information has been compiled from manufacturer/distributor sources. Please consult the documentation for current technical specifications.
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