Free Delivery on 100s of Products

Live Chat - Online Instant help & advice

Trade Discounts & exclusive pricing

0% Credit Available Apply for an account

SMK4896 Surface Mounting Pattress for Firex Alarms

A white circular alarm mounting base shown with included installation accessories, including terminal blocks and two metal screws placed in front of the base.
A white circular alarm mounting base shown with included installation accessories, including terminal blocks and two metal screws placed in front of the base. A white circular plastic mounting base with multiple screw holes and cable entry slots, designed for attaching a smoke or heat alarm. An angled view of a white circular alarm mounting base showing its raised edges, internal mounting posts, and multiple cut-outs for wiring and screw positioning. A side profile of a white circular alarm mounting base showing its shallow depth and smooth outer edge. The underside of a white circular mounting base featuring a printed product label with the Kidde Firex logo, part number SMMK4896, and a barcode.
4.5 out of 5 stars

7 In Stock

For dispatch today order within
4 Hrs 34 Mins

£6.49 inc VAT

£5.41 ex VAT

Standard Delivery

Will usually be delivered in 2-3 working days

£4.20 inc VAT

Next Day Delivery

Will usually be delivered the next working day

£7.00 inc VAT

The Kidde Firex smoke and heat alarms are mains powered with a back-up battery. If the ceiling is concrete or there is insufficient room for cable, the SMK4896 surface mounting pattress may be required for the installation.

Customer Reviews

Customer Reviews (4)

4.5 out of 5 stars

Reviews by Real Customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5

Reviewer

C O

No issues with product

Published on

14th November 2025

Rating: 5 / 5

Reviewer

T D

Quality product and good delivery

Published on

15th June 2024

Rating: 5 / 5

Reviewer

Anonymous

Easy to install

Ordered the fire alarms to replace the originals that had turned yellow with age

Published on

19th March 2017

FAQs

There are no FAQs to display for the selected item.

Technical Data

Technical Data

Product Code KESMK4896
Brand Kidde
Manufacturer's Part Number SMK4896
Approvals & Markings CE Marked
Colour White
Compatible Products Kidde Firex Alarms
Equipment Type Base
Material Plastic
Operating Temperature 0°C To +40°C
Recyclable Not Recyclable
Relative Humidity Up To 93%
Warranty 6 Years
Dimensions (Unit)
  • Height: 18mm
  • Diameter: 139mm
Weight 48g
Datasheets
Two round white Kidde FireX alarms shown front‑on, one smoke alarm and one heat alarm, each with ventilation slots and central test buttons.

Mains Powered Smoke Alarms & Heat Alarms with Self-Charging 10 Year Back-up Battery - Kidde Firex KF-R Series

From: £48.68 inc VAT

£40.57 ex VAT

 Front view of Kidde Firex mains powered heat alarm with alkaline battery backup showing circular white casing and central button

Mains Powered Heat Alarm with Back-Up Battery - Kidde Firex KF30

From: £31.19 inc VAT

£25.99 ex VAT

 Two round white Kidde FireX alarms shown front‑on, one smoke alarm and one heat alarm, each with ventilation slots and central test buttons.

Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - Kidde Firex KF Series

£20.10 inc VAT

From: £19.90 inc VAT

£16.58 ex VAT

 Front view of kidde firex mains powered optical smoke alarm alkaline battery backup in white with sensor and vent details

Mains Powered Optical Smoke Alarm with Back-Up Battery - Kidde Firex KF20

£20.10 inc VAT

From: £19.90 inc VAT

£16.58 ex VAT