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Description
Kidde Firex 5x KF20LL Optical Smoke & 1x KF30LL Heat Alarm Kit Mains Powered with Long-Life 9V Lithium Battery Back-UpKidde Firex 5x KF20LL Optical Smoke & 1x KF30LL Heat Alarm Kit Mains Powered with Long Life 9V Lithium Battery Back Up FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS 5x Mains Powered Optical Smoke Alarm (KF20LL): 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
Kidde Firex 5x KF20LL Optical Smoke & 1x KF30LL Heat Alarm Kit Mains Powered with Long-Life 9V Lithium Battery Back-Up
FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS
5x Mains Powered Optical Smoke Alarm (KF20LL):
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 Lithium back-up battery supplied as standard
Mains Optical Smoke Alarm Specification:
- Model KF20LL
- Power Supply 230V mains-powered with 9V Lithium 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 (KF30LL):
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 Lithium back-up battery supplied as standard
Mains Heat Alarm Specification:
- Model KF30LL
- Power Supply 230V mains-powered with 9V Lithium 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 KF20LLData Sheet for KF30LL
Instruction Manual:
Instruction Manual for KF20LLInstruction Manual for KF30LL
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 16 reviews
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Product Reviews
★★★★★ 5
Great device
Color: White and Silver
This is a sweet little device and I really like it. It’s powerful and rechargeable, which is a big plus. As far as I can tell it only has one speed, so the first time I used it, it frothed so quickly that it splashed everywhere!
I originally bought it not just for milk but to mix powders (like cacao or supplements) into drinks. Since it’s strong, I’ve found a workaround by quickly turning it on and off to control the mixing, and that works well.
I do wish it had multiple speeds for gentler stirring, but overall it’s efficient, effective, and does a great job frothing.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Reliable and easy
Color: Black
I've bought several different frothers from various places including Amazon. None lasted, none were effective, just a waste of money. This one is ready everytime I pull it out of the drawer to use it and it has plenty of power. The charge lasts so much longer than I thought it would. It's priced well and a good product.
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Perfect little mixer and frother
Color: Black
I love this little device to mix up items for a smoothie drink. It works perfectly for me. So easy to use as well! Lots of frothiness, is that a word? LoL! All I know it works for me. I use it for powdered coconut oil and a collagen powder in almond milk for a start to my morning. It has a lot of power and mixes it very well. Design is easy to use and handle in one's hand. Will know more on the longevity, at a future date. I wish it had some sort of a stand though. But I have a spot to lay it on it's side. Easy to clean or rinse off with hot water. Just remember not to immerse the whole thing into your sink of water or dishwasher. Not a good idea.
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Reviewed in the United States on September 17, 2025
★★★★★ 5
Love it--really works!
Color: Black
Thoroughly pleased with the high quality and speed of the frother with the strong sturdy whisk! Quickly turns clumps of protein powder into a perfectly creamy, smooth-textured beverage with no mess. Ability to froth nicely when desired. Intending to also use as a mini immersion blender. This powerful frother arrived fully charged and included a charging cable. The USB slot on the handle is compatible with my other chargers so I have no need to use the charging cable that came in the box with the frother. The handle/grip is well made and comfortable to hold. Love the sturdy whisk, simple on-off button, and that it's rechargeable and easy to clean. Works perfectly and highly recommend!
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Reviewed in the United States on September 8, 2025
★★★★★ 4
Great, wish it had a manual option
Color: Black
Strong whisk that does the job well! Great volume on froth and easy to use and recharge. Holds a charge well. I use mine about every other day and charge it about once a month. Does not have a stand but I keep it in a drawer. I did wish it had a manual function but the timer seems to get it just right.
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Reviewed in the United States on February 12, 2026
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