Smoke Alarms

Smoke alarms are an integral element in commercial and domestic safety. Able to detect fires and warn inhabitants, a smoke alarm is the most effective way to ensure fire safety and awareness in a way that doesn’t rely on human detection.

The RS Components range of smoke alarms and fire detection equipment has dependable models from leading brands.

Ionization Smoke Detection

The most common form of smoke alarm are those that rely on ionization. With a special ionized sensor chamber, these alarms sound when smoke particles interrupt the air flow in that sensing chamber. Therefore, as soon as smoke particles get near the smoke alarm, it will sound. Though this makes them vulnerable to false alarms from every day kitchen activities, they remain one of the most effective tools in fire detection, and are believed to respond more swiftly to fast flaming fires than optical smoker detectors.

Optical Smoke Detection

Optical smoke detectors use a pulsing LED in a sensing chamber. When smoke enter this chamber the LED light is reflected and triggers the alarm. Optical smoke detectors are considered to react more swiftly to smouldering fires, and trigger fewer false alarms due to cooking smoke and bathroom steam than ionization versions.

Heat Detection

Some fire alarms rely on the detection of heat rather than smoke to identify fire. Heat detectors have a heat sensitive element that responds to either a ’rate-of-rise’ in temperature, or to a fixed temperature. Rate-of-rise (ROR) detectors measure a sudden increase in temperature, but often also have a fixed temperature that they will respond to. As heat detectors don’t rely on smoke, they are used in areas where air particles might interfere with a smoke detectors correct operation, such as kitchens or laundry rooms.

Battery or Hard-Wired Fire Detection System

Battery operated smoke alarms are very common and cost effective. Because they are independent from any wiring, they can be installed almost anywhere. Their primary disadvantage is that they may run out of battery, but most models will contain a low battery warning or a battery testing button, allowing you to make sure they are always in working order. Many manufacturer’s recommend changing the batteries of a smoke alarm over a fixed schedule, such as every six months or one year, to ensure full confidence in their operation.

Hard-wired smoke alarms, are wired into the mains and are more common in commercial properties. They have the advantage of never running out of batteries, and though they rely on a mains power feed, they are equipped with battery backups in the event of a power cut.

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Beskrivning Pris Series Type Sound Level Power Indicator Low Power Warning Signal Piezo Alarm Material Diameter Depth Operating Voltage
RS-artikelnummer 123-5771
Tillv. art.nrFH450RB
452,69 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 183-7315
Tillv. art.nrSA700UKX5
VarumärkeFirst Alert
119,50 kr
Each
Enheter
- Optical Smoke Detector 85dB - - - - 86mm 37 mm -
RS-artikelnummer 123-5774
Tillv. art.nrFH150 Midi
109,91 kr
Each
Enheter
- Smoke Detector - - - Yes - - - -
RS-artikelnummer 123-5776
Tillv. art.nrFHB10
220,14 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 169-4638
Tillv. art.nrCSA-GOV24
VarumärkeHoyles
2 640,84 kr
Each
Enheter
- Cigarette Smoke Detector - - - - - - - -
RS-artikelnummer 183-7312
Tillv. art.nrSA300UKX5
VarumärkeFirst Alert
76,48 kr
Each
Enheter
- Smoke Detector 85dB - - - - 104mm 35 mm 9V dc
RS-artikelnummer 123-5769
Tillv. art.nrFH450BB
349,49 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 123-5778
Tillv. art.nrFHB10W
588,14 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 123-5772
Tillv. art.nrFH500R
433,56 kr
Each
Enheter
- Mount - - - Yes - - - -
RS-artikelnummer 183-7306
Tillv. art.nr770MRL
VarumärkeBRK
486,73 kr
Each
Enheter
- Smoke Detector 85dB Yes Yes - - 133mm 38 mm 230V ac
RS-artikelnummer 123-5768
Tillv. art.nrFH250BB
315,89 kr
Each
Enheter
- Smoke Detector - Yes - - - - - -