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How to install a wireless light switch

Updated: October 2026

You are standing under a loft hatch with a kit that promised no chasing and no new cable. The plate is the easy half, and how to install a wireless light switch starts with the receiver, the mains module that joins the lighting circuit at the light. This page sets out that order and the points where you stop. If you are still matching kits to loads, use our [wireless light switches](/hub/electrical-equipment/wireless-switch) comparison, then fit the plate only after the receiver is in a circuit you understand or an electrician has put it there. The Products Compared editorial team updated this on 15 October 2026 from amazon.co.uk listings and public UK sources. We did not lab-test the modules.

You are standing under a loft hatch with a kit that promised no chasing and no new cable.

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The plate is not the electrical work

A wireless kit adds a transmitter you press and a receiver that switches the lamp. The receiver is mains equipment on a 230 V lighting circuit, and it belongs at the light or in a fitting that already has the conductors. Put the receiver where the listing asks for live and neutral. ZLinkStar puts that joint at the light and tells you to keep the module out of a metal box. Thinkbee prints a receiver of about 3.9 × 2.3 × 2.3 cm, while other modules are larger, so measure the rose before the cover goes back on. Neither a kinetic plate nor a battery plate makes the receiver safe to move while the circuit is live.

Three things to know before the ceiling is closed

Three checks have to be true before you close the ceiling rose. You can isolate the lighting circuit and prove it is dead with a suitable tester. You can name live and neutral if the listing wants them. The receiver fits the fitting, including a metal-box limit where the listing prints one. These listings did not provide a proved wiring diagram. If you cannot point at the conductors the leaflet names, there is no terminal map on this page to borrow. Neutral and receiver size are checks in the buying guide before you order.

When the old switch has no neutral

A wireless light switch with no neutral at the old plate is a common UK layout. The switch drop often brings down a permanent live and a switched live, and the neutral stays in the ceiling rose. The new plate does not create that missing conductor. A receiver built for live and neutral at the light can use the rose when you can name those conductors and the module fits. A UK reviewer of a DEWENWILS kit found L1 and two wires in COM, and no neutral at the switch. This page will not print terminals the listing itself does not print. If the original switch must keep working, read the wireless two way light switch page before you disconnect anything.

When to stop and book an electrician

Stop if you cannot name the conductors, if a fitting is warm, or if the breaker trips as soon as power returns. A unit that sparks is a reason to isolate the lighting circuit, leave it off, and speak to the seller. Section 9 of the Consumer Rights Act 2015 concerns satisfactory quality, so a spark is a reason to stop using the unit. A bathroom or shower room is a different job from a landing. Electrical Safety First says that work should go to a registered electrician, and that bathroom circuits need RCD protection. In England, SI 2012/3119 uses 0.6 m and 2.25 m around a bath or shower, and a wireless plate does not shrink those distances. SI 2012/3119 does not apply to ordinary buildings in Wales, and it does not state the rule in Scotland or Northern Ireland. If you cannot prove the circuit is dead, leave the open rose for someone who can. A qualifying purchase on amazon.co.uk can earn us a commission at no extra cost to you when a brand is named.

Common questions

Where does the receiver go?
The receiver goes at the light, or in a fitting that already holds the conductors the listing names, often live and neutral in the ceiling rose. ZLinkStar tells you to make that connection at the light and to keep the module out of a metal box. Thinkbee prints a receiver of about 3.9 × 2.3 × 2.3 cm, and other modules are larger, so measure the rose against the unit you bought. Fit the plate on the wall only after that place is real.
Do I need a neutral at the old switch?
Often the neutral is in the ceiling rose, because many UK switch drops never brought it down to the plate. Some kits still want a neutral in the back box, and those will not suit that wall. A Candeo reviewer needed a neutral and called the plate the transmitter, which is the wall control, separate from the receiver. If you cannot see the live and neutral the leaflet names, stop and book an electrician.
Can I do this myself?
You can, when you can isolate the lighting circuit, prove it is dead, and name the conductors the listing asks for. The IET Part P FAQ treats DIY as in scope, and the finished work still has to meet BS 7671:2018. In England a new circuit, a consumer unit, or an alteration in a special location is notifiable under SI 2012/3119. Those jobs, and any rose you cannot prove dead, belong with a registered electrician.
What if the old switch only has L1 and COM?
A UK review of a DEWENWILS kit described L1, two wires in COM, and no neutral at the switch. That pattern usually means the neutral stayed at the ceiling rose. Those letters do not map the terminals on a new receiver, and this page will not invent the layout. Use a module meant for the rose, where you can identify live and neutral, or leave the joint to an electrician.
Is this notifiable in Scotland?
The notification rule on this page is the England instrument, SI 2012/3119. It does not apply to ordinary buildings in Wales, and it does not state the rule in Scotland or Northern Ireland. Ask a registered electrician or the local authority in Scotland before you alter a lighting circuit. An English non-notifiable example, such as adding a lighting point outside a special location, stays an English example.

Related pages

Sources

Public UK sources used for this comparison. Listing prices, stars, and review counts are from amazon.co.uk on 15 October 2026.

  1. GOV.UK — using the UKCA marking (retrieved 15 October 2026)
  2. SI 2012/3119 — Building Regulations (England) (retrieved 15 October 2026)
  3. IET — Part P frequently asked questions (retrieved 15 October 2026)
  4. Electrical Safety First — bathroom safety (retrieved 15 October 2026)
  5. Consumer Rights Act 2015, section 9 (retrieved 15 October 2026)
  6. Smart Home Assistant — best smart light switches UK (2026) (retrieved 15 October 2026)
  7. amazon.co.uk listings for these twelve ASINs (retrieved 15 October 2026)