Ravel RE-428 Series Reflective Beam Smoke Detector
A reflective beam smoke detector with the infrared transmitter and receiver in one housing, for large indoor spaces. It is ordered as the RE-428FR or the longer range RE-428HR.

Dealer for RavelA standalone reflective beam smoke detector that aligns itself and keeps its alignment as the building moves. It can be installed and commissioned by one person.
Standards and approvals: UL
| Specification | EazyBeam |
|---|---|
| Operating Voltage | 14 to 36 VDC |
| Operating current | All operational modes, 5mA; Fast alignment mode, 33mA |
| Operating temperature | -20 to +55°C |
| Storage temperature | -40 to +85°C |
| Relative humidity (non-condensing or icing) | 0 to 93% |
| IP rating | Ip55 |
| Housing flammability rating | UL94 V0 polycarbonate |
| Fault level / Rapid obscuration (Δ ≤ 2 seconds) | ≥85% |
| Maximum angular misalignment of Reflective Detector | ±0.5° |
| Maximum angular misalignment of Reflector | ±5° |
| Maximum angular alignment of Reflective Detector | ±4.5°(±70° with adjustment bracket accessory) |
| Detection range | 0 to 50m 0 to 120m with Reflective Long Range Kit |
| Alignment method | Laser assisted, Auto-AlignmentTM. Manual alignment: optional setting |
| Auto-AlignmentTM protocol | Background check, Box search, Adjust and Centre |
| Building Movement TrackingTM | Compensates for natural shifts in alignment from building movement* |
| Contamination Compensation | Compensates for gradual build-up of contamination on the optical surfaces |
| Light Cancellation TechnologyTM | Compensates for high levels of sunlight and artificial lighting |
| Optical wavelength: smoke detection | 850nm near infrared (invisible) |
| Integrated laser: laser alignment | 650nm visible. Class IIIa <5mW |
| Dynamic Beam Phasing | Allows beam detectors to be mounted facing each other with the reflectors in the middle. Eliminates false alarms caused by crosstalk between beams |
| Signal output | Individual Alarm and Fault relays (VFCO) 2A @ 30 VDC |
| Alarm response threshold levels | 25% (1.25dB): Fastest response to smoke 35% (1.87dB), Default value 55% (3.46dB), High immunity to false alarms, slow response to smoke 85% (8.23dB), Highest immunity to false alarms, slowest response to smoke. Configured via the integrated user interface |
| Delay to Alarm | 10 seconds, for momentary partial obstruction of the beam path |
| Delay to Fault | 10 seconds, for momentary obstruction of the beam path |
| Separation distance between Detector and Reflector | 5 to 50m 50 to 120m with Reflective Long Range Kit |
| Beam path clearance | 1m in diameter from centre line between Detector and Reflector |
| Detector dimensions | 130W x 181H x 134D in mm (see diagram) |
| Reflector dimensions | Up to 50m separation distance, Single reflector 100mm x 100mm x 9mm Up to 120m separation distance, Four reflectors arranged in a square patter 200mm x 200mm x9mm |
| Product weight | Detector: 0.7kg; Reflector, 0.1kg |
| Multi-detector arrangement | Dynamic Beam Phasing allows for Detectors to face each other with the reflectors in the middle |
| Housing colour | White RAL9016, UV stable |
| Cable gauge and type | 2 core, dedicated, 0.5 to 1.6mm (24 to 14 AWG) System compatible with fireproof and non-fireproof cable meeting local installation standards |
| Cable entry | 3 knock-out locations capable of accepting M20, 1⁄2″ or 3⁄4″ glands | 4 drill-out locations capable of accepting glands up to 21mm diameter |
| Alarm test | Optical alarm test using Commissioning and Maintenance Kit accessory |
Specifications as published by Ravel. Please confirm the exact model with us before ordering.
A reflective beam smoke detector with the infrared transmitter and receiver in one housing, for large indoor spaces. It is ordered as the RE-428FR or the longer range RE-428HR.
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