SKU: 33856459273

Kidde Firex 1x KF20R Optical Smoke & 1x KF30R Heat Alarm Kit Mains Powered with Sealed-In Rechargeable Battery Back-Up

Sale price$85.03 Regular price$94.48
Save 10%

Pay in installments of $23.62 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 31 - Aug 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Kidde Firex 1x KF20R Optical Smoke & 1x KF30R Heat Alarm Kit Mains Powered with Sealed-In Rechargeable Battery Back-UpKidde Firex 1x KF20R Optical Smoke & 1x KF30R Heat Alarm Kit Mains Powered with Sealed In Rechargeable Battery Back Up FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS 1x Mains Powered Optical Smoke Alarm (KF20R): 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 1x KF20R Optical Smoke & 1x KF30R Heat Alarm Kit Mains Powered with Sealed-In Rechargeable Battery Back-Up

FULLY COMPLY WITH THE NEW 2022 SCOTTISH & WELSH REGULATIONS

1x Mains Powered Optical Smoke Alarm (KF20R):

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 – Built-in rechargeable Lithium back-up tamper-proof battery

Mains Optical Smoke Alarm Specification:

  • Model KF20R
  • Power Supply 230V mains-powered with built in rechargeable 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 (KF30R):

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 – Built-in rechargeable Lithium back-up tamper-proof battery

Mains Heat Alarm Specification:

  • Model KF30R
  • Power Supply 230V mains-powered with rechargeable 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 (not including heat sensor guard)
  • Bracket Dimensions 133 x 133 x 6mm
  • Alarm Weight 180g
  • Warranty 6 years (including battery)
  • 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 Non user-replaceable 3 x 3V rechargeable Lithium Aluminium Alloy / Magnesium Composite
  • Oxide cells (ML2430)
  • 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 KF20R
Data Sheet for KF30R

Instruction Manual:

Instruction Manual for KF20R
Instruction Manual for KF30R
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 33856459273

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.1 ★★★★★
Based on 28 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
T
Verified Purchase
Tw
Natrona Heights, US
★★★★★ 5
"WORK GREAT"!
Size: 24.01+18.01, Style: 2 piece
They Fit perfectly, easy to put on my Hyundai Elantra. Their Alot nicer than the old ones my last mechanic put on & work Alot better. Good value for the price i Highly recommend them. I'm a CHRISTAIN & Not paid for my review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
P
Verified Purchase
PapaRatzy
Carnegie, US
★★★★★ 5
Easy to install no streaks
Size: 24+17.01, Style: 2 piece
No problems installing these wiper blades. They do a very good job of clearing the windshield of water when it’s raining. I have not noticed any squeaks or streaks. Well worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
A
Verified Purchase
Alex
Chelsea, US
★★★★★ 5
Good Price. Solid Product
Size: 26+19+21, Style: 3 piece
I ordered these wipers for a 2011 Honda Crosstour. It’s a pretty rare car and I barely see these on the road, so finding these wipers was great since most brands do offer parts for these cars but they are crazy expensive, what I liked about these wipers was the durability and the efficiency you can notice the material was sturdy and wasn’t going to snap off and the efficiency was great. It cleared the windshield without leaving and strikes or making a sound. I would highly recommend these wipers or buying from this brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
K
Verified Purchase
Keith
Massapequa, US
★★★★★ 4
Quick delivery, and fits perfect
Size: 22+22, Style: 2 piece
Quick delivery, Fit perfect. Don't get much rain in SO CAL so I can't report on the quality just yet. Seems good for this environment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
M
Verified Purchase
Mike
Grantham, US
★★★★★ 5
Good product at a great price
Size: 26+17+12.01, Style: 3 piece
I was looking for some wipers that were just like the ones that come on my 2024 Honda HRV and these came up on the Amazon website so I ordered them and the very next day they were delivered to my house!!!!! WOW and they are just like the ones that came on my HRV. Very easy to install with NO adapters to use or parts to take off. All I had to do was take my old wipers off and put on the NEW ones and the price is great too. Also they come well packaged and a plastic guard is over the rubber for more protection in the shipping so be sure to take that off before install, you’d be surprised how many people would leave it on and think that they don’t work properly. Note: Be sure to clean your windshield before you use your wipers cause road scum or wax from car washes will make you think that they don’t work. I had some problems but once I cleaned my windshield really good there was no streaks at all. Now I don’t know how long they will last cause I just got them, may do another review in the future.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 17, 2025

recommand products