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
742,81 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
373,04 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 183-7317
Tillv. art.nrSCO5UK
VarumärkeFirst Alert
426,51 kr
Each
Enheter
- Optical Smoke Detector 85dB - - - - 120mm 50 mm -
RS-artikelnummer 123-5777
Tillv. art.nrFHH10
238,25 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 287-1545
Tillv. art.nr820613
VarumärkeJo-El Electrical
318,51 kr
Each
Enheter
- - - - - - - - - -
RS-artikelnummer 169-4643
Tillv. art.nrCSA-FDW24
VarumärkeHoyles
5 406,37 kr
Each
Enheter
- Cigarette Smoke Detector - - - - - - - -
RS-artikelnummer 183-7307
Tillv. art.nr660MBX
VarumärkeBRK
301,11 kr
Each
Enheter
- Optical Smoke Detector 85dB Yes Yes - - 140mm 44 mm 230V ac
RS-artikelnummer 123-5778
Tillv. art.nrFHB10W
599,90 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 524-5898
Tillv. art.nrRM1000
VarumärkeABUS
331,09 kr
Each
Enheter
- Optical Smoke Detector - - - - PC 98mm 46 mm 12V dc
RS-artikelnummer 183-7305
Tillv. art.nr670MBX
VarumärkeBRK
141,33 kr
Each
Enheter
- Smoke Detector 85dB Yes Yes - - 133mm 38 mm 230V ac
RS-artikelnummer 123-5768
Tillv. art.nrFH250BB
322,20 kr
Each
Enheter
- Smoke Detector - Yes - - - - - -
RS-artikelnummer 183-7309
Tillv. art.nr760MRL
VarumärkeBRK
598,85 kr
Each
Enheter
- Optical Smoke Detector 85dB Yes Yes - - 140mm 53 mm 230V ac
RS-artikelnummer 123-5774
Tillv. art.nrFH150 Midi
112,11 kr
Each
Enheter
- Smoke Detector - - - Yes - - - -
RS-artikelnummer 183-7316
Tillv. art.nrHA300CBUK
VarumärkeFirst Alert
101,46 kr
Each
Enheter
- Thermistor Smoke Detector 85dB - - - - 105mm 55 mm 9V dc
RS-artikelnummer 183-7306
Tillv. art.nr770MRL
VarumärkeBRK
496,44 kr
Each
Enheter
- Smoke Detector 85dB Yes Yes - - 133mm 38 mm 230V ac
RS-artikelnummer 123-5770
Tillv. art.nrFH250RB
427,46 kr
Each
Enheter
- Optical Smoke Detector - Yes - - - - - -
RS-artikelnummer 123-5779
Tillv. art.nrFHH10W
649,58 kr
Each
Enheter
- Heat Detector - Yes - - - - - -
RS-artikelnummer 123-5771
Tillv. art.nrFH450RB
461,74 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 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 ...
Firehawk FHH10W series battery operated heat alarms have ...
Description:
Firehawk FHH10W series battery operated heat alarms have a 10-year life complete with Advanced ThErmistor Protection including Wireless Interlink. The high performing wireless interlink alarm is used and recommended by the UK Fire and Rescue Services. The alarm is specially ...
Ionisation sensing technology.230V mains powered.Battery back-up:MRL – 10 ...
Description:
Ionisation sensing technology.230V mains powered.Battery back-up:MRL – 10 year sealed for life rechargeable lithium battery.Hardwire interconnect with up to 12 units of a similar type.Compatible with wireless interlink base.Supplied with PUSH-FIT mounting base.Central test and silence button.