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Apollo AlarmSense Optical Smoke Detector 55000-390APO

Apollo AlarmSense Optical Smoke Detector 55000-390APO

Apollo AlarmSense Optical Smoke Detector 55000-390The AlarmSense Optical Smoke Detector works using the light scatter principle. The detector changes to alarm state at a pre-set threshold of smoke penetration into the sensing chamber.AlarmSense is a range of conventional fire detection and alarm products designed to be connected to the same pair of supply wires making installation quicker and less expensive. AlarmSense has been developed to make the design and installation of a fire detection and alarm system easier and more economic for small to medium-sized buildings.The range also allows an existing system to be extended or modified if necessary. This flexibility makes AlarmSense an excellent choice for use in HMOs House in Multiple Occupation. As you would expect from Apollo AlarmSense incorporates features that help reduce false alarms and patented technology to ensure the integrity of a system. The range also includes products such as beacons to help meet the requirements of the Disability Discrimination Act DDA.Brand FeaturesFlexibleReliableCost-effectiveCompliant with BS 5839Easy to installEasy to extendProduct InformationThe AlarmSense Optical Smoke Detector works using the light scatter principle. The detector changes to alarm state at a pre-set threshold of smoke penetration into the sensing chamber.Key Features Responds well to slow-burning smouldering firesWell suited for bedrooms and escape routes360C visibility of LEDsReduces false alarmsQuick and simple installation

GBP 15.76
1

Nittan EVC-P Photoelectrical Optical Smoke Detector

Nittan EVC-P Photoelectrical Optical Smoke Detector

Nittan EVC-P Photoelectrical Optical Smoke Detector with 375 Ohm ResistorUsing a simple but effective technique the EVC-P Optical Detector incorporates a chamber housing an Infra-Red IR LED light and a photodiode light detector set at an obtuse angle preventing it from seeing the light. When smoke enters the chamber the light bounces off the smoke particles and strikes the photodiode causing it to generate an alarm condition when a set threshold value is met.The EVC-P Optical Detector is therefore more sensitive to larger smoke particles which tend to be caused by smouldering fires rather than fast flaming fires.OperationThe smoke chamber of the EVC-P is constructed so that light cannot enter from outside but smoke can pass through the chamber slots. The EVC-P utilises the light scatter sensing principle. The LED pulses every 8 seconds to maintain a low monitoring current. A quick charge time 20 seconds is also achieved. The detector incorporates an alarm verification function which requires two successive pulses before an alarm is given.The interval between the first and second pulse is automatically reduced to four seconds after the first alarm level is monitored. The detector design provides strong immunity to air velocities contamination and RF interference. The geometry of the smoke chamber and optics support assembly is designed to give the best possible signal to noise ratio resulting in excellent response characteristics.Key FeaturesOmniview 360 LEDInternal Alarm Current Limiting ResistorWide Operational Voltage Range 12v-32vOptical Detector

GBP 15.60
1