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.

...
Read more Read less

Filter

Visar 1 - 20 av 31 produkter
Resultat per sida
Beskrivning Pris Series Type Sound Level Power Indicator Low Power Warning Signal Piezo Alarm Material Diameter Depth Operating Voltage
RS-artikelnummer 240-0553
Tillv. art.nr55000-317
VarumärkeApollo
728,25 kr
Each
Enheter
Series 65 Optical Smoke Detector - - - - - - - 9 → 33V dc
RS-artikelnummer 740-8066
Tillv. art.nr5TC1296
VarumärkeSiemens
384,65 kr
Each
Enheter
DELTA reflex Smoke Detector 85dB - - - - - - 230 V, 9 V
RS-artikelnummer 240-0581
Tillv. art.nr55000-122
VarumärkeApollo
365,73 kr
Each
Enheter
Series 65 Heat Detector - - - - - - - 17 → 28V dc
RS-artikelnummer 524-5961
Tillv. art.nrRM1100
VarumärkeABUS
214,45 kr
Each
Enheter
- Heat Detector - - - - PC 100mm 46 mm 12V dc
RS-artikelnummer 123-5778
Tillv. art.nrFHB10W
588,14 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 183-7317
Tillv. art.nrSCO5UK
VarumärkeFirst Alert
418,18 kr
Each
Enheter
- Optical Smoke Detector 85dB - - - - 120mm 50 mm -
RS-artikelnummer 169-4643
Tillv. art.nrCSA-FDW24
VarumärkeHoyles
5 406,37 kr
Each
Enheter
- Cigarette Smoke Detector - - - - - - - -
RS-artikelnummer 524-5898
Tillv. art.nrRM1000
VarumärkeABUS
331,09 kr
Each
Enheter
- Optical Smoke Detector - - - - PC 98mm 46 mm 12V dc
RS-artikelnummer 183-7313
Tillv. art.nrSA700LUKX5
VarumärkeFirst Alert
162,51 kr
Each
Enheter
- Optical Smoke Detector 85dB - - - - 86mm 37 mm -
RS-artikelnummer 183-7311
Tillv. art.nr790MRL
VarumärkeBRK
587,15 kr
Each
Enheter
- Thermistor Smoke Detector 85dB Yes Yes - - 140mm 68 mm 230V ac
RS-artikelnummer 123-5769
Tillv. art.nrFH450BB
349,49 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 169-4638
Tillv. art.nrCSA-GOV24
VarumärkeHoyles
2 640,84 kr
Each
Enheter
- Cigarette Smoke Detector - - - - - - - -
RS-artikelnummer 123-5774
Tillv. art.nrFH150 Midi
109,91 kr
Each
Enheter
- Smoke Detector - - - Yes - - - -
RS-artikelnummer 123-5779
Tillv. art.nrFHH10W
636,84 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 123-5768
Tillv. art.nrFH250BB
315,89 kr
Each
Enheter
- Smoke Detector - Yes - - - - - -
RS-artikelnummer 287-1545
Tillv. art.nr820613
VarumärkeJo-El Electrical
312,27 kr
Each
Enheter
- - - - - - - - - -
RS-artikelnummer 123-5770
Tillv. art.nrFH250RB
419,08 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 183-7316
Tillv. art.nrHA300CBUK
VarumärkeFirst Alert
99,47 kr
Each
Enheter
- Thermistor Smoke Detector 85dB - - - - 105mm 55 mm 9V dc
RS-artikelnummer 123-5771
Tillv. art.nrFH450RB
452,69 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 123-5777
Tillv. art.nrFHH10
233,58 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
Related Products
Firehawk FH250 series smoke alarms are part of ...
Description:
Firehawk FH250 series smoke alarms are part of the Fast-Fix optical smoke alarms that have the X-Profile photoelectric chamber. Included is the TSE technology (thermal stability enhancement) designed to reduce nuisance alarms still maximising smoke and fire detection. The smoke ...
Firehawk FHH10 series battery operated heat alarms have ...
Description:
Firehawk FHH10 series battery operated heat alarms have a 10-year life complete with Advanced Thermistor detection and tamper proof. The high performing alarm is used and recommended by the UK Fire and Rescue Services. The alarm is specially designed where ...
Firehawk FHB10W series battery operated Optical smoke alarms ...
Description:
Firehawk FHB10W series battery operated Optical smoke alarms have a 10-year life complete with TSE Thermal Stability Enhancement including Wireless Interlink. The high performing wireless interlink alarm is used and recommended by the UK Fire and Rescue Services. The alarm ...
The weatherproof CSA-FDW24 SD Evolution is designed for ...
Description:
The weatherproof CSA-FDW24 SD Evolution is designed for the detection of unauthorised smoking in external areas and will detect a flame lighting a cigarette with 120 degree field of view. The module is designed for single applications, and will detect ...