Best Switches Relays Deals Online in the UK (10 Deals Found)

Last Updated - 01/04/2026 Sort By:

Best Choice
Gebildet

New
Gebildet 2pcs 40/30 Amp Waterproof Relay Switch 12AWG Harness Set with Built-in Diode- 12V DC 4-Pin SPST Automotive Rela
✪ Waterproof automotive relay with 12V DC (max. 14V). Note: 12V and 14V are coil voltages, not the voltage that triggers

£11.99
TIANXUAN

New
12V Fuse Automotive Relay Switch Harness Set Gebildet 30A Ato Atc Blade Fuse 4 Pin Spst Automotive Electrical Relays wit
Upgraded Design with Built-in Fuse: Includes 30A ATO/ATC blade fuse integrated into the 12v relay socket, eliminating th

£7.99
Best Value
SwitchBot

New
SwitchBot Smart Relay Switch 1, Smart Relay Module with Built-in Hub, Wi-Fi&Bluetooth Switch Works with Alexa/Apple Home
Smart Relay Switch with Bluetooth Repeater, Matter-Compatible: This device support Apple Home(*Connection to the Matter

£9.39 £12.99
Hailege

New
Hailege 2pcs 5V One Channel Relay Module Relay Switch With OPTO Isolation High Low Level Trigger
The module uses genuine quality relay, normally open interfaces , Maximum load: AC 250V/10A, DC 30V/10A.

£6.49
Gebildet

New
Gebildet 3pcs 12V Fuse Relay Switch 12 AWG Harness Set with Built-in Diode- 30A ATO/ATC Blade Fuse, 4-Pin SPST Automotiv
Upgraded Version - Automotive relays built in fuse socket with included 30A blade fuse, no need of a separate fuse holde

£11.99
17% Off
Xatgiouy

New
2 Pcs 4 Pin 12V 30A SPDT Relays, Multi Purpose Automotive Relay, Truck Car Relay Heavy Duty Standard Relays Switch for C
High-Quality Durability: Made from durable nylon material with excellent insulation properties, these 4 Pin 12V 30A SPDT

£4.96 £5.96
10% Off
Weasch

New
Weasch 2 Pack Fuse Relay Switch Kit, 12V 30A, 4 Pin SPST, 30A Switch Harness Set, Automotive Electrical Relays with 14 A
Rated voltage 12VDC (14V Max), 30A High Switching Capability

£9.04 £9.99
SONOFF

New
SONOFF Smart WiFi Light Switch 10A 2400W, Wireless Relay Switch Universal DIY Module for Smart Home Automation, Works wi
【Smart WiFi Switch BASICR4】SONOFF Smart WiFi Light Switch BASICR4 is a smart switch which support APP remote control, Sm

£7.19
SHUNYABEI

New
2Pcs JD1912 Automotive Relay Switch & Starter 12V 40A SPST 4-Pin for Heavy Duty Cars, Trucks, Motorcycles, Boats (Black)
Package Includes :You will get 2Pcs JD1912 4 pin 12V/40A SPST Automotive Relay

£5.89
30% Off
SONOFF

New
SONOFF Wi-Fi Smart Switch 10A 2400W, Smart Relay Switch Works With Alexa/Google Home Assistant, Remote Control & Schedul
【MINIR4 Wi-Fi Smart Switch】 SONOFF MINIR4 is a wifi switch which comes with the remote control /voice control/ smart sch

£11.32 £16.09

10 Switches Relays deals are available from: Amazon stores, starting from £4.96.
The biggest discount we found is 30% on SONOFF Wi-Fi Smart Switch 10A 2400W, Smart Relay Switch Works With Alexa/Google Home Assistant, Remote Control & Scheduled, Neutral and Live Wires Required, MINIR4 at Amazon.
The lowest price we found is £4.96 while the highest is £11.99.
Prices for the best Switches Relays deals average at £8.63.
Last updated on April 1, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Switches Relays.