Motion Detectors Price Comparison

Motion detectors occupy a curious corner of the home security market — they're simultaneously one of the most practical purchases you can make and one of the most confusing. The range here spans from 15 £ for a basic wired PIR sensor up to 15 £ for professional-grade systems, and the gap between those extremes reflects genuinely different use cases rather than just brand premium.

STEINEL dominates this catalogue, and for good reason. With 17 products and an average price well below the category median, they represent the clearest value proposition for anyone who needs a reliable wired PIR sensor without overcomplicating things. Their IS 130-2 and IS 180-2 series consistently attract the most merchant competition — a reliable sign that retailers are fighting for your business on these models. ESYLUX, meanwhile, commands a higher average price and caters more squarely to commercial and semi-professional installations where detection range and switching capacity matter more than simplicity.

The technology split is worth understanding before you buy. The vast majority of products here use Passive Infrared (PIR) detection — sensing changes in thermal radiation as a person moves through the field of view. It's energy-efficient, well-proven, and entirely sufficient for most domestic and light commercial applications. Dual-technology sensors (PIR combined with microwave) exist at the higher end of the price range and are worth considering in environments prone to false alarms, such as spaces with large windows, heating vents, or passing traffic outside. For most hallways, porches, and garden paths, though, a well-specified PIR is all you need.

Smart connectivity is creeping into this category too. Ring, TP-Link Tapo, and 4lite WiZ all offer wireless models that integrate with broader home automation ecosystems — useful if you're already invested in a smart home setup. These tend to sit around the 15 £ mark and trade some of the raw reliability of hardwired sensors for the convenience of app control and remote alerts. Worth comparing against door and window sensors if you're building out a full perimeter security system, or against smoke detectors if you're kitting out a property from scratch.

One thing our price data makes clear: the sweet spot sits firmly between 15 £ and 15 £. That range gets you a proper adjustable PIR with a decent IP rating, a wide field of view, and enough switching capacity to drive a lighting circuit directly. Spending more than 15 £ is only justified for ceiling-mount commercial sensors, dual-technology units, or integrated smart systems. Don't overlook alarm and detector accessories either — relay modules and mounting brackets can make or break an installation.

How to Choose the Right Motion Detector

With prices ranging from 15 £ to well over 15 £, picking the wrong motion detector is an easy mistake to make. The technology gap between a basic PIR and a dual-tech commercial sensor is significant — and so is the difference between a sensor that works flawlessly and one that trips every time a car drives past. Here's what actually matters.

PIR, Microwave, or Dual-Tech — which detection method suits your space?

Passive Infrared (PIR) is the right choice for the overwhelming majority of domestic and light commercial applications. It detects changes in thermal radiation — essentially, body heat moving through the field of view — and is energy-efficient, affordable, and reliable in stable environments. The Fresnel lens optics in quality PIR sensors like the STEINEL IS 180-2 give you a wide, consistent detection zone without the false-alarm headaches of more sensitive technologies.

Microwave detection uses active pulses to sense movement through solid objects, which sounds impressive but creates real problems in domestic settings — it can trigger on movement outside a room or through thin walls. Dual-technology sensors (PIR + microwave combined) solve this by requiring both sensors to trigger simultaneously, dramatically reducing false alarms. They're worth the premium in challenging environments: large glazed spaces, areas near busy roads, or commercial premises. For a standard hallway or garden path, they're overkill.

Detection range and field of view for your specific location

These two specs work together and are often misread. A 180° field of view sounds comprehensive, but if the detection range is only 6 metres, you'll have blind spots in any room larger than a modest bedroom. Conversely, a 12-metre range with a 90° angle suits a long corridor perfectly but will miss movement to the sides of a large open-plan space.

For hallways and stairwells, a wall-mounted sensor with a 90–120° FOV and 6–10 metre range is typically ideal. For open-plan rooms or outdoor areas, look for 140–180° coverage with a 10–15 metre range. Ceiling-mounted sensors — like the STEINEL 032845 series — offer 360° coverage and work well in rooms where wall mounting isn't practical, though they require more involved installation.

Wired vs wireless — installation reality, not just convenience

Wired sensors (230V AC mains) are the more reliable long-term choice: no batteries to replace, no RF interference, and direct switching of lighting circuits up to 1000–2000W without a relay module. The trade-off is installation — you need a switched live feed at the mounting point, which means either existing wiring or a qualified electrician. STEINEL and ESYLUX dominate the wired segment here.

Wireless models (battery or solar) from Ring, TP-Link Tapo, and 4lite WiZ are genuinely useful for retrofitting into properties where running new cable isn't feasible, or for integrating with a smart home system. Battery life varies considerably — check the manufacturer's claimed figure and read reviews critically. Solar-powered options exist but depend on adequate light exposure, which limits placement flexibility. Expect to pay a modest premium over equivalent wired models for the wireless convenience.

IP rating — essential outdoors, often overlooked indoors

IP20 is fine for a dry indoor hallway. The moment you're mounting a sensor in a porch, garage, bathroom, or anywhere outdoors, you need at minimum IP44 (splash-resistant) — and ideally IP54 or IP65 for fully exposed outdoor positions. This is a spec that's easy to overlook when comparing prices, and getting it wrong means a failed sensor within a season.

Most STEINEL outdoor models carry IP44 or better. Budget sensors from Nedis and Brennenstuhl in the sub-15 £ range are typically rated for indoor use only — check before buying if you're planning an outdoor installation.

Adjustable hold time and sensitivity — the difference between useful and annoying

A sensor with fixed hold time and fixed sensitivity is a sensor you'll eventually disconnect in frustration. Adjustable hold time (the duration the output stays active after detecting motion) matters enormously: too short in a bathroom and the light cuts out mid-shower; too long in a high-traffic office and the sensor never resets properly.

Similarly, adjustable sensitivity lets you tune out false triggers from pets, passing vehicles, or wind-blown foliage. Pet-immune modes — available on some mid-range and premium models — use angled detection zones to ignore movement below a certain height, typically effective for animals under 20kg. If you have dogs or cats, this feature alone can justify a step up in budget.

Switching capacity — can it drive your lighting directly?

This spec is almost never mentioned in consumer-facing descriptions but matters significantly for wired installations. A sensor rated at 500W can directly switch a standard LED or halogen lighting circuit. If you're controlling multiple luminaires, fluorescent tubes, or high-wattage outdoor floodlights, you may need a sensor rated at 1000–2000W, or a relay module to handle the load.

ESYLUX and Busch-Jaeger sensors at the higher end of the price range typically offer higher switching capacities and are designed with commercial lighting control in mind. For a single outdoor light or hallway fitting, any standard PIR will handle the load without issue.

• Budget basics (From 15 £ to 15 £) : Brennenstuhl, Nedis, TP-Link Tapo, and 4lite WiZ occupy this range. You're getting functional PIR sensors — adequate for simple indoor applications like triggering a single light in a hallway or integrating with a basic smart home hub. Build quality and adjustability are limited; most have fixed sensitivity and minimal IP protection. Fine as a starting point or for low-stakes applications, but don't expect them to last a decade in a demanding environment.
• The sweet spot (From 15 £ to 15 £) : This is where STEINEL's IS 130-2 and IS 180-2 series live, and where we'd direct most buyers. You get proper adjustable sensitivity and hold time, a respectable IP rating, and enough switching capacity for standard lighting circuits. Multiple colour options (white, black, anthracite) mean they integrate cleanly with most interiors. The merchant competition on these models is strong, so price comparison genuinely pays off.
• For the more demanding installation (From 15 £ to 15 £) : STEINEL's RS 200 SC wireless ceiling sensor, Merten, JUNG, and Schneider Electric models sit here. Expect wider detection angles, higher switching capacities, better IP ratings, and more sophisticated daylight threshold controls. Suitable for larger rooms, commercial spaces, or installations where aesthetics and integration with building management systems matter. JUNG and Busch-Jaeger in particular are designed to match their own switch and socket ranges for a unified look.
• Professional and commercial grade (Over 15 £) : ESYLUX and Busch-Jaeger dominate above 15 £. These are sensors designed for commercial buildings, open-plan offices, and demanding outdoor environments. Dual-technology detection, high switching capacities, DALI or KNX bus compatibility, and precision lux-level control are the differentiators. For domestic use, spending this much is rarely justified unless you're integrating into a professional smart building system.

Top products

• STEINEL IS 130-2 Passive infrared (PIR) sensor Wired Wall Black (STEINEL) : The most competitively priced entry in STEINEL's reliable IS 130-2 series — four merchants competing on this model keeps the price honest. Excellent for straightforward wall-mounted indoor or sheltered outdoor use; don't expect the wider FOV of the IS 180-2, but for corridors and entry points it's hard to fault at this price.
• STEINEL IS 180-2 Infrared sensor Wired Wall Silver (STEINEL) : The IS 180-2 is the step up that most buyers should actually take — the full 180° field of view makes it genuinely versatile for larger rooms and open-plan spaces. The silver finish is a nice differentiator for modern interiors. Four offers means real price competition; compare before buying.
• STEINEL RS 200 SC Wireless Ceiling/wall Anthracite (STEINEL) : The wireless ceiling/wall option for those who can't run new cable — genuinely useful for retrofits. The anthracite finish is smart and unobtrusive. At this price point you're paying a fair premium for the wireless convenience; if you can run a cable, the wired IS 180-2 is better value. But for flexibility, this is the one to consider.
• TP-Link Tapo Smart Motion Sensor (TP-Link) : The standout budget smart home option — Tapo's ecosystem support (Alexa, Google Home, HomeKit) is broader than most at this price. It won't replace a hardwired PIR for lighting control, but as a security trigger feeding into a smart home routine, it punches well above its weight. Best suited to buyers already in the Tapo or Kasa ecosystem.
• STEINEL 032845 motion detector Infrared sensor Wired Ceiling White (STEINEL) : The ceiling-mount option for rooms where wall placement isn't practical — 360° coverage makes it ideal for square rooms, offices, and open-plan spaces. Installation is more involved than a wall-mount sensor, so factor in electrician costs if you're not confident with wiring. A solid, no-nonsense choice for the right application.

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