Outdoor Security Lights Ireland: How to Choose PIR Floodlights and Sensors (2026 Buying Guide)
John Phelan
Outdoor security lights work best when you stop thinking about brightness alone and start thinking about coverage, control and placement. A motion activated floodlight over a driveway, a sensor lantern at the front door and a low glow along a side passage will do far more to deter a chancer than one blinding lamp bolted to the gable. As the evenings draw in from September, this is the job most Irish homeowners get around to, and it is also the one most often done badly. This guide covers the types of security light worth buying, how bright each position actually needs to be, how to set a sensor so it triggers on people rather than the neighbour's cat, and where the law says you need a registered electrician.
In this guide
- What types of outdoor security light are there?
- How bright does a security light need to be?
- How to set a PIR sensor properly
- Where to put security lights around the house
- What IP rating do you need in Ireland?
- Do you need an electrician?
- Common mistakes
- Frequently asked questions
What types of outdoor security light are there?
There are four approaches, and most homes end up using two or three of them together. Pick by the position rather than by the price.
Floodlight with a built in PIR
The workhorse. One unit contains the LED panel and the passive infrared sensor, so there is a single fitting to mount and wire. It sits dark, wakes on movement, then times out. This is the right answer for a driveway, a back garden or a yard where you want light on demand and nothing on all night.
A slimline 50W floodlight with the sensor built in and a 4000K natural white output that reads true at night. Enough light for a full driveway or the back of a house, in a black finish that disappears against a wall by day.
If you would rather set the timing and sensitivity from the ground instead of up a ladder, a remote controlled version of the same idea saves a lot of messing about, and it comes in four output sizes so you can match the wattage to the position.
Set the time delay, sensitivity and daylight threshold from a handset rather than from a ladder. IP65 rated and available in 10W, 20W, 30W and 50W to suit anything from a back door to a large drive.
Floodlight plus a separate sensor
Splitting the two gives you far better control. The sensor goes where it sees people arriving, at head height on a corner or beside a gate, and the light goes where you want the light. One sensor can also switch several fittings at once, so a single trigger lights the drive, the side passage and the back door together. This is how most professionally lit houses are done.
A proper German made sensor with 240 degrees of coverage, so it watches a wall and around a corner at the same time. Switches existing lights, which makes it the tidy way to add motion control without replacing fittings.
Pair a sensor like that with a plain floodlight and you get exactly the coverage you want for less than a premium all in one unit.
A straightforward weatherproof LED floodlight with no sensor built in, ready to be switched by a separate PIR or a manual switch. Four output sizes so you can light a doorway or a whole yard from the same range.
Wall lantern with a sensor
A floodlight on the front of a house looks wrong. A lantern with a sensor built in gives you the same motion triggered welcome without the industrial look, which matters on a front elevation or either side of a door.
A clean modern lantern available in a standard version or with a PIR motion sensor built in. The sensible choice where a floodlight would look out of place but you still want the light to come on by itself.
Solar security light
Where there is no cable and no appetite for running one, a solar floodlight with a PIR does the job. Because it only fires in short bursts it copes far better than a solar light that tries to glow all night, and it stays useful through an Irish winter. Sheds, side gates and the far end of a garden are its natural home.
Motion activated solar security light in 8W or 12W, black or white. No wiring and no electrician, so it goes up in an afternoon on a shed, a gate or anywhere a cable would be a nuisance.
How bright does a security light need to be?
Brighter is not better. Too much light on a small area creates glare and deep black shadow beside it, which is worse for seeing what is actually there and worse for any camera you have. LED floodlights give roughly 100 lumens per watt, so the wattage is a fair shorthand for output. Match it to the area rather than buying the biggest one on the shelf.
| Output | Roughly | Suits |
|---|---|---|
| 10W | 1,000 lumens | A back door, a porch or a narrow side passage |
| 20W | 2,000 lumens | A small yard, a patio or a single car drive |
| 30W | 3,000 lumens | A standard driveway or the back of a house |
| 50W | 5,000 lumens | A long drive, a large yard or a gable wall |
On colour, 4000K natural white is the one to pick for security. Warm white flatters a garden but muddies detail, and very cold blue white is harsh and unpleasant for neighbours. Natural white shows colours close to true, which matters if you are ever trying to describe a car or a jacket to a Garda.
How to set a PIR sensor properly
A passive infrared sensor reads moving heat against a cooler background. That is why it triggers reliably on a person walking across its field and unreliably on someone walking straight at it. Almost every complaint about security lights comes down to three settings that were never adjusted after fitting.
- Time delay. How long the light stays on after the last movement. One to two minutes is plenty. Ten minutes just annoys the neighbours and wears out nothing but goodwill.
- Lux threshold. The daylight level below which the sensor is allowed to fire. Set it too high and the light triggers in the middle of the afternoon. Set it at dusk and it behaves.
- Sensitivity and range. Turn it down until it stops catching the road, the footpath and the neighbour's garden. A sensor that fires forty times a night is a sensor everybody learns to ignore.
Mount the sensor around two to two and a half metres up. Higher than that and it looks down over people's heads. Lower and every cat in the parish sets it off. Angle it so people cross its view rather than walk into it, and keep it away from anything that moves warm air, such as a vent, a flue or a washing line of laundry in the sun.
Where to put security lights around the house
Burglars want darkness and cover, not a fight with a floodlight. Light the ways in and the places somebody could work unseen, and leave the rest alone.
- The driveway and the front approach. The most used and the most visible. A sensor floodlight or a pair of sensor lanterns here does most of the deterrent work.
- The side passage. Usually the darkest and most overlooked part of an Irish semi, and the usual route to the back. A modest 10W with a sensor is enough.
- The back door and patio doors. Where most forced entries happen. Light it, and light it so you can see out rather than being dazzled from inside.
- Sheds, garages and oil tanks. Anything worth taking that sits away from the house. Solar suits these well.
- Gates and boundary gaps. The point where somebody decides whether to come in at all.
Aim every fitting down. A floodlight tilted towards the horizon throws light into the neighbours' bedrooms, wastes most of its output on the sky and blinds anyone approaching. Tilted down at the ground it lights the area you actually care about.
What IP rating do you need in Ireland?
Irish weather is the real test. The second digit of the IP number is the water rating, and for anything exposed it needs to be a 5 or better.
| Rating | Protects against | Use it for |
|---|---|---|
| IP44 | Splashes and rain from any direction | Sheltered porches and walls under a deep eave |
| IP65 | Heavy rain and hose jets | Exposed walls, gables, drives and yards |
| IP66 | Powerful jets and driven rain | Coastal and very exposed rural positions |
Near the sea, salt air is harder on a fitting than rain. Look for a corrosion resistant finish and stainless fixings, because ordinary steel screws will bleed rust down a wall within a winter.
Do you need an electrician?
For anything wired into the mains, yes. In Ireland electrical work on a domestic installation must be carried out by a Registered Electrical Contractor under the Safe Electric scheme, and you should be given a Completion Certificate when the job is finished. That covers new floodlights, new sensors and any new circuit or spur feeding them.
Solar and battery security lights are the exception. There is no mains connection, so you can mount one yourself with a drill and a ladder. That is a large part of why they suit sheds and outbuildings so well.
Common mistakes
- One giant floodlight instead of several small ones. Creates glare and black shadow. Two or three modest fittings beat one 100W cannon every time.
- Leaving the factory settings alone. Most nuisance triggering is a sensitivity dial nobody ever turned down.
- Mounting the sensor too low. Cats, foxes and wheelie bins all become news events.
- Lighting the house but not the way in. A lit wall with a dark side passage beside it is an invitation.
- Buying on wattage alone. The sensor quality decides whether you keep the light or disconnect it in a month.
- Ignoring the neighbours. A light aimed across a boundary is the fastest way to a bad relationship and a request to take it down.
Frequently asked questions
How bright should an outdoor security light be?
Match it to the area rather than buying the brightest one available. Around 10W suits a back door or side passage, 20W a small yard or single drive, 30W a standard driveway, and 50W a long drive or gable wall. Too much light in a small space causes glare and hides more than it reveals.
Why does my security light keep coming on for no reason?
Almost always the sensitivity is set too high, the sensor is mounted too low, or it is pointed at something that moves warm air such as a vent, a flue or a busy road. Turn the sensitivity down, raise the sensor to about two metres, and angle it so it watches your own approach rather than the footpath.
Do security lights actually deter burglars?
They help, particularly motion activated ones, because a light that suddenly comes on signals that somebody may have noticed. Lighting the approaches and the dark corners matters more than sheer brightness. Security lighting works best alongside good locks and clear sight lines rather than instead of them.
Can I fit an outdoor security light myself?
Only if it is solar or battery powered. Anything wired into the mains must be installed by a Registered Electrical Contractor under the Safe Electric scheme, and you should receive a Completion Certificate for the work.
What IP rating do outdoor security lights need in Ireland?
IP65 for anything on an exposed wall, drive or gable, which covers heavy rain and hose jets. IP44 is acceptable only in genuinely sheltered spots such as a deep porch. On the coast, look for IP66 and a corrosion resistant finish.
Related reading: for the wider picture on lighting your exterior, see our outdoor lights buying guide for Ireland. If there is no cable where you need light, our guide to solar garden lights in Ireland covers what solar can and cannot do here.
Light the ways in before the evenings close in
From PIR floodlights and standalone sensors to solar security lights for sheds and gates, browse the range and get the right fitting for each position.
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