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Description
Kidde Firex 5x KF20 Optical Smoke & 1x KF30 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back-UpKidde Firex 5x KF20 Optical Smoke & 1x KF30 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back Up FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS 5x Mains Powered Optical Smoke Alarm (KF20): Mains Optical Smoke Alarm Features: Mains powered optical smoke alarm that can be interlinked with up to 23 other Kidde mains alarms, be they ionisation, optical or heat. Once interlinked, the detection of the relevant danger by an individual
Kidde Firex 5x KF20 Optical Smoke & 1x KF30 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back-Up
FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS
5x Mains Powered Optical Smoke Alarm (KF20):
Mains Optical Smoke Alarm Features:
Mains-powered optical smoke alarm that can be interlinked with up to 23 other Kidde mains alarms, be they ionisation, optical or heat.
Once interlinked, the detection of the relevant danger by an individual unit will sound across all the connected alarms.
Optical alarms are for use in escape or circulation routes and in areas where there is a danger of ignition of furniture and surroundings by cigarettes producing slow, smouldering fires.
This mains-powered unit should be installed by a qualified electrician and can be used throughout the home, except in the kitchen where a Firex Heat Alarm is recommended. These alarms comply with UK Building Regulations for new housing and associated standards (Grade D BS 5839, Part 6).
- Interlink with up to 23 Firex hard-wired alarms – all alarms sound if danger is detected
- Alarm memory – identifies source unit within interconnecting network
- Combined Test/Hush button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms
- Auto reset after activation
- Tamper-resistant locking device – prevents unauthorised removal without the use of a tool
- Mains operation – 9V Alkaline back-up battery supplied as standard
Mains Optical Smoke Alarm Specification:
- Model KF20
- Power Supply 230V mains-powered with 9V Alkailine battery back-up
- Temperature Range 0ºC to + 40ºC
- Humidity Range Up to 93% Relative Humidity (RH) non-condensing
- Storage and Transport -20ºC to +60ºC and 5–95% relative humidity (RH) non-condensing
- Alarm Dimensions 127 x 127 x 39mm
- Bracket Dimensions 133 x 133 x 6mm
- Alarm Weight 242g
- Warranty 6 years
- Approvals BSI certified to BS EN14604:2005
- CE tested and certified Sensor Optical, circular lateral chamber with insect-resistant width slot entry portals and added bug screen mesh
- Chamber Size 35mm outside diameter x 16mm depth approximate (external)
- Detection Band Infrared light wavelength
- Button Test Simulates the effect of smoke within the sensing chamber, checks electronics and sounder
- Automatic Self-test Circuitry is tested and unit beeps (chirps) if fault is detected
- Supply Voltage 230V AC, 50 Hz (nominal UK voltage)
- Power Consumption < 15mA
- Connection Push-in/snap-fit type connector with 150mm long flying leads (supplied)
- Battery Back-up User-replaceable alkaline 9V battery (522/6LR61)
- Power-on Indicator Continuous green LED
- Alarm Sounder Electronic piezo-electric sounder (T3 pattern sound - 3 pulses - space - 3 pulses), soldered contacts
- Sound Output 85dB (A) minimum at 3 metres
- Alarm Frequency 3.2 kHz typical
- Dust Protection In-built foam gasket in rear of alarm to prevent dust ingress into rear of the alarm
- Alarm Status Red LED flashes approx once every five minutes = normal operation
- Red LED flashes once a second = sensing smoke (sounder alarm sounds)
- Red LED flashes once every ten seconds = in hush condition (auto-reset after 15 minutes)
- Interconnection Up to 24 Firex and Kidde ‘Slick’ units (smoke, heat and CO) can be hardwire interconnected with optional control (see below)
- Optional Controls Wired Remote Test and Hush Unit (REMTH) allows test and hush of interlinked units
- Optional Pattresses SMK23RU also has integral switchable relay for operating remote devices
- SMK4896 – Surface mounting base for added ease of installation
- Fixing Mounting bracket ring supplied with two ‘T’ slot fitting option
- 57mm spacing to a maximum of 90mm for standard screw fittings on back boxes
- Bracket has 50mm diameter central access hole for cabling
- Plastics used NORYL – Cover, main body and mounting bracket
- Lead-Free Status All Firex alarms are lead-free
1x Mains Powered Heat Alarm (KF30):
Mains Heat Alarm Features:
Mains-powered heat alarm that can be interlinked with up to 23 other Kidde mains alarms, be they ionisation, optical or heat.
Once interlinked, the detection of the relevant danger by an individual unit will sound across all the connected alarms.
Mains-powered heat alarms can be used throughout the home in humid or dusty environments where an optical or ionisation smoke alarm is unsuitable, e.g. kitchens, loft spaces and garages.
The Firex range requires installation by a professionally qualified electrician and complies with UK Building Regulations for new housing and associated standards (Grade D BS 5839, Part 6).
- Interlink with up to 23 Firex hard-wired alarms – all alarms sound if danger is detected
- Alarm memory – identifies source unit within interconnecting network
- Combined Test/Hush button allows regular testing of alarm function and can be used to temporarily silence nuisance alarms
- Auto reset after activation
- Tamper-resistant locking device – prevents unauthorised removal without the use of a tool
- Mains operation – 9V Alkaline back-up battery supplied as standard
Mains Heat Alarm Specification:
- Model KF30
- Power Supply 230V mains-powered with 9V Alkaline battery back-up
- Temperature Range 0ºC to + 40ºC
- Humidity Range Up to 93% Relative Humidity (RH) non-condensing
- Storage and Transport -20ºC to +60ºC and 5–95% relative humidity (RH) non-condensing
- Bracket Dimensions 127 x 127 x 39mm
- Alarm Dimensions 133 x 133 x 6mm
- Alarm Weight 213g
- Warranty 6 years
- Approvals BSI certified to BS5446 Part 2: 2003
- CE tested and certified
- Sensor Thermistor (Thermal Resistor) within detection unit
- Button Test Simulates the effect of heat at the sensor, checks electronics and sounder
- Automatic Self-test Circuitry is tested and unit beeps (chirps) if fault is detected
- Supply Voltage 230V AC, 50 Hz (nominal UK voltage)
- Power Consumption < 15mA
- Connection Push-in/snap-fit type connector with 150mm long flying leads (supplied)
- Battery Back-up User replaceable alkaline 9V battery (522/6LR61)
- Power-on Indicator Continuous green LED
- Alarm Sounder Electronic piezo-electric sounder (T3 pattern sound - three pulses - space - three pulses) with soldered contacts
- Sound Output 85dB (A) minimum at 3 metres
- Alarm Frequency 3.2 kHz typical
- Alarm Status Red LED flashes approx once every five minutes = normal operation
- Red LED flashes once a second = sensing heat in excess of 58ºC (sounder alarm sounds)
- Interconnection Up to 24 Firex and Kidde ‘Slick’ units (smoke, heat and CO) can be hardwire interconnected with optional control (see below)
- Optional Controls Wired Remote Test and Hush Unit (REMTH) allows test and hush of interlinked units
- Optional Pattresses SMK23RU also has integral switchable relay for operating remote devices
- SMK4896 – Surface mounting base for added ease of installation
- Fixing Mounting bracket ring supplied with two ‘T’ slot fitting option
- 57mm spacing to a maximum of 90mm for standard screw fittings on back boxes
- Bracket has 50mm diameter central access hole for cabling
- Plastics used NORYL – Cover, main body and mounting bracket
- Lead-Free Status All Firex alarms are lead-free
Please note: Alarms are sold individually.
Data Sheet:
Data Sheet for KF20Data Sheet for KF30
Instruction Manual:
Instruction Manual for KF20Instruction Manual for KF30
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Comfortable dress shoe.
Size: 7, Color: Brown Napa Leather
Finally a comfortable dress shoe. It's both comfortable to walk in and looks and wears like a more traditional dress shoes for the office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
★★★★★ 5
American sizing!
Size: XX-Large, Color: Oatmeal Heather, Pocket Description: No Pocket
These are great t-shirts and fantastic quality for the price. I bought them for my sons. The cotton is thick and nice-looking, the ivory colour is beautiful and it looks a lot more expensive than it is. I bought one for my eldest son and then bought two more (one for each son). The first one I bought has been getting a lot of wear for about three months. I wash it in the machine and line dry it because we line dry everything where we live. It has held up beautifully, has not shrunk, pilled or changed in any way. The only thing, and it is not a bad thing, per se, is that this is REAL American sizing. We are all tall with broad shoulders, and my eldest is a bit heavy. (Around 1m84 and 105 kg, I'm feeling too lazy to convert it online, but probably in the area of 6'1" or 2" and over 200 pounds.) So I ordered 2XL, which is what he wears in most inexpensive brands we get here. But, although he has been wearing it, as he needed cool-weather clothes, it is long in the sleeves and body and also wide. So I ordered him a second one in XL and he will set the XXL aside until he needs it, or gains weight. I would definitely recommend sizing down from what you usually order. But these are great! The Amazon interface seems to be prompting me to address functionality and cut. The cut is very good, although both large and long. I don't really know what they mean by functionality. It's a t-shirt, not ski wear or running shoes! The cotton fabric is nice and thick and soft. It's comfortable. It definitely works, as a garment. Don't know what else to say!
(Just to let you know, I am a real human ordering from overseas. I am not paid or even receiving merchandise in return for this review, although I wouldn't say no if they offered.)
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Reviewed in the United States on February 3, 2026
★★★★★ 5
Great quality shirt, Recommend!
Size: X-Large, Color: Charcoal Heather, Pocket Description: No Pocket
This shirt is suprisingly comfortable, thick and fits very well. Not too short & not too long and is good quality fabric that streches with you. It's more than just a generic, thin long sleeve T-shirt. U can wear w/jeans or chinos, it's that nice. I paid 3x the price for designer brands w/logos that are not as nice. Price is right, too!
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Reviewed in the United States on March 19, 2026
★★★★★ 4
JUST "SHORT" OF PERFECT
Size: Medium, Color: Black, Pocket Description: Pocket
I have purchased several of these long sleeves with pockets in various colors.
PROS:
First, they are surprisingly high quality for an Amazon Essentials product. The material is thicker than I was expecting. I was looking for a thinner material to wear inside a shirt but I was pleasantly surprised. These are sturdy.
I also liked the fact at the sleeve ends don't have elastic. They are straight open and loose allowing for free movement and it doesn't feel constricting.
CONS:
However, they are all a little short in length. And some colors are shorter than others indicating inconsistency and quality control issues. The burgundy I got was the shortest. Wearing them is a little frustrating as they are always rolling up and drafty especially in cold weather. If they were just an inch or so longer, I would have given 5 stars.
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Well made, well fitting shirt.
Size: Large, Color: Burgundy, Pocket Description: No Pocket
I love buying products that pleasantly surprise. This is a well made shirt made with quality fabric. I also like that it fit me perfectly, it's wrinkly resistant and great value for the money. I've brought this awhile ago and it's held up great in the wash. It's one of those causal wear shirts you can wear just about anywhere. Oh, and the part that pleasantly surprised me the most is the fit. It fit so well, people ask if I've been going to the gym or am working out (I haven't). Who knew all i needed was a nice fitting shirt?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026