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How to use a motion sensor socket

Updated: 23 October 2026

The socket on the landing is free, the lamp has a plug, and you want it on when you reach the stair after dark. How to use a motion sensor socket, for these units, is a sequence on that outlet: set what the listing allows, aim across the walk, leave a click-switch lamp on, then test by day and after dark. The Products Compared editorial team used the amazon.co.uk files, not a bench test. If the job becomes a new cable to a ceiling rose, stop. The [motion sensor socket comparison](/hub/electronic-surveillance/motion-sensor-socket) is the product table. Plugging in is not notifiable building work.

The socket on the landing is free, the lamp has a plug, and you want it on when you reach the stair after dark.

Our top picks

RAYZEEK RAYZEEK wireless PIR socket kit

Best overall

RAYZEEK RAYZEEK wireless PIR socket kit
5.8/10about £9.24
View offer
EfforPrac EfforPrac UK PIR socket, 4.1

Rank 2

EfforPrac EfforPrac UK PIR socket, 4.1
7.4/10about £9.40
View offer
Carylozet Carylozet UK PIR socket

Best value

Carylozet Carylozet UK PIR socket
5.3/10about £9.16
View offer
On this page
  1. 1.What you can set before you rely on it
  2. 2.Where the sensor has to look
  3. 3.The lamp has to come on by itself
  4. 4.If it stays on or never starts
  5. 5.When to stop and call someone

What you can set before you rely on it

RAYZEEK lists 90 seconds, 5, 10, 30 and 60 minutes. Two AAA cells are not in the box. The Carylozet review of 24 September 2026 and the £9.40 EfforPrac review of 30 September 2026 both say five minutes with no adjustment. The unrated UK row names modes and prints no seconds. If five minutes is the only behaviour, decide that before you tape the sensor. Purchase checks are on the motion sensor socket buying guide.

Where the sensor has to look

A PIR notices a change of heat across its zones. Walking across the view tends to trigger sooner than walking straight at the lens. That is a walk-test method from UK detector manuals, not a measured result for these sockets. One RAYZEEK review says a light sensor they described as under 35 lux did not switch the load. Another says the sensors stay inactive in daylight. The EfforPrac and Carylozet files print no lux step to turn down. Move the unit off a bright pane, or accept daytime switching.
RAYZEEK RAYZEEK wireless PIR socket kit

Testsieger

RAYZEEK RAYZEEK wireless PIR socket kit
5.8/10about £9.24
View offer

The lamp has to come on by itself

Leave the lamp’s own switch on. These sockets restore mains. They do not wake a television or a lamp that waits for a remote. Prove the lamp on an ordinary socket first. Then walk across the lens, not towards it. On a unit whose review says five minutes fixed, that interval is the behaviour. If the lamp stays dark on the first night, check the lamp switch, the receiver’s hidden switch, and fresh AAA cells, in that order. The UK plug page is the stop if the pins or the voltage mark are wrong.

If it stays on or never starts

Five minutes on matches the Carylozet review of 24 September 2026 and the EfforPrac review of 30 September 2026. It can also mean you are still in the cone, so the timer keeps restarting. Step out and shut the door. If it never drops, unplug it. Heat, smell, buzzing or a cracked plug ends the trial.

When to stop and call someone

Call a competent person if the wall socket is cracked or warm, or if you need the ceiling light switched. A new circuit, a consumer-unit change, or a bathroom special location is their job. Plugging into a sound existing socket is not those jobs. Do not open the ceiling to extend a plug-in sensor. The motion sensor socket vs PIR switch page is that fork.

Common questions

Where do I put a sensor that is stuck on the plug?
In the wall socket that faces the walk, because the body cannot be aimed. A 120° listing only describes the cone from that point. If the useful socket looks at a bookcase, a single-body PIR will watch the bookcase. Move the lamp, or use a separate sensor.
Which way should a separate sensor face?
Across the direction people walk, not straight at their approach, and clear of radiators and sunlit glass. The RAYZEEK bullets claim a stand you can rotate. Detector manuals use the same across-the-beam idea for a walk test. It is a method, not a range we measured on this kit.
Does the lamp’s own switch stay on?
Yes, if it is a mechanical switch. The socket only restores mains. Reviews of the kit say that arrangement lights a lamp, and that a television or other standby load does not start. Prove the lamp on an ordinary socket first. If it needs a remote after power returns, the PIR will not press that remote.
Why is it on for five minutes?
Because that is what the written reviews describe for Carylozet on 24 September 2026 and for the £9.40 EfforPrac unit on 30 September 2026, against titles that sound adjustable. The RAYZEEK bullets do list 90 seconds up to 60 minutes. On a single-body unit with no such steps, five minutes is the behaviour to plan around.
Why does it come on in daylight?
The single-body files do not print a lux number, so there may be nothing to set. The kit lists a light sensor and no lux figure in the table. One review says detection under about 35 lux failed. Another says the sensors stay off in daylight. Test after dark and at noon. If you cannot move it off a bright wall, this unit is the wrong tool.
What do I do if it smells hot?
Unplug it and leave it out. Do the same if the plug buzzes, cracks, or discolours. Do not put it back to see if the smell fades. If the wall socket stays hot with the unit removed, stop using that socket and get it inspected.
When is this no longer a plug-in job?
When you need a light that has no plug, when the wall socket is damaged, or when the room is a bathroom special location. A new cable, a consumer unit, or a ceiling rose is work for a competent person. The versus page sets out that fork.

Related pages

Best motion sensor socket

Motion sensor socket

Motion sensor socket UK: what to check before buying

Motion sensor socket UK plug: fused BS 1363, not 110 V

Motion sensor socket vs PIR switch: plug or ceiling

Sources

Public UK sources from the digest first, then the amazon.co.uk listings compared on this page. Prices and stars were taken on 20 October 2026.

  1. Electrical Equipment (Safety) Regulations 2016, regulation 35 (retrieved 20 October 2026)
  2. Plugs and Sockets etc. (Safety) Regulations 1994 (retrieved 20 October 2026)
  3. Electricity Safety, Quality and Continuity Regulations 2002, regulation 27 (retrieved 20 October 2026)
  4. GOV.UK, consumer products staying safe (retrieved 20 October 2026)
  5. Electrical Safety First, plugs and fuses (retrieved 20 October 2026)
  6. IET, Part P FAQ (retrieved 20 October 2026)
  7. Approved Document P (2013) (retrieved 20 October 2026)
  8. amazon.co.uk listings for the five ASINs in this set (retrieved 20 October 2026)