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The detector features two parts: a transmitter-receiver and reflector. The transmitter-receiver directs a continuous infra-red beam towards the reflector which utilising a prism then sends back the beam to the transmitter-receiver which in turn registers the strength of the beam.
A fire or fault is signalled when the continuous beam is interfered between the two parts by smoke; reducing the strength of the beam. The transmitter-receiver is preset to indicate a fire or fault when the beam's strength is below a certain value.
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| Reflective Beam Detector (50m Range) | MBD50R |
| Reflective Beam Detector (100m Range) | MBD100R |
| Mounting Bracket | MRBFP |
| Standards: | EN54 Pt12 |
| Operating Voltage: | 18Vdc to 30Vdc |
| Quiescent Current: | <5mA (no LEDs illuminated) |
| Alarm Current: | <9mA |
| Alignment Current: | <18mA |
| Power up Time: | 20 seconds (approx.) |
| Operating Range: | 5 to 50 metres (MBD50R) 5 to 100 metres (MBD100R) |
| Fire Alarm Thresholds: | 2.50dB (25%) 3.74dB (35%) 6.02dB (50%) |
| Optical Wavelength: | 880nm |
| Operating Temperature: | -10°C to +55°C |
| Humidity (Non-condensing): | 0 to 93% RH |
| Construction: | PC / ABS |
| Colour: | White |
| Dimensions (HxWxD): | 210mm x 130mm x 120mm |
| Weight: | 0.8kg |
| Ingress Protection: | IP40 |
| Suitable for use with: | Eaton Conventional Fire Systems |
