Finder 18.51.8.230.0300 is a ceiling-mounted PIR movement and presence detector with a 110–230 V AC supply, 10 A single-pole output and integrated ambient light sensing for automatic lighting control.
Why Choose the Finder 18.51.8.230.0300 PIR Movement Detector?
The Finder 18.51.8.230.0300 is a versatile passive infrared (PIR) movement and presence detector designed for automatic lighting control in commercial, industrial and building applications. Part of the Finder 18 Series, it detects movement within its coverage area and automatically operates connected lighting or suitable control circuits.
Designed for ceiling mounting, the 18.51.8.230.0300 combines PIR detection with an integrated ambient light sensor, allowing operation to be influenced by both occupancy and surrounding illumination. Adjustable timing and light-level settings enable the detector to be configured for different environments, helping reduce unnecessary lighting operation and improve energy efficiency.
With a 110–230 V AC supply and a single-pole 10 A output contact, the Finder 18.51.8.230.0300 provides dependable automatic switching for lighting installations in offices, corridors, communal spaces, commercial premises and other indoor environments.
Key Advantages
PIR movement and presence detection for automatic lighting control.
110–230 V AC supply suitable for common mains-powered installations.
10 A single-pole output contact provides dependable load switching.
Adjustable operating parameters allow the detector to suit different applications.
Ceiling-mounted format provides effective coverage with a discreet installation.
Key Features
Finder 18 Series PIR detector.
Passive infrared movement sensing technology.
110–230 V AC supply voltage.
1 pole normally open output contact.
10 A rated contact.
Integrated light-dependent sensor.
Adjustable switch-off delay.
Adjustable ambient light threshold.
Wide-area ceiling detection pattern.
Designed for automatic indoor lighting control.
Reliable PIR Control for Energy-Efficient Lighting
PIR detectors sense changes in infrared energy caused by people moving through their detection area. The Finder 18.51.8.230.0300 uses this technology to switch lighting automatically, providing convenient hands-free control while helping reduce energy consumption in areas that are not continuously occupied.
The integrated light sensor allows the detector to consider the available ambient illumination before switching the connected lighting. Combined with adjustable timing, this makes the Finder 18.51 suitable for a broad range of commercial and industrial spaces where reliable occupancy-responsive lighting is required.
Typical Applications
Office and commercial building lighting.
Corridors, hallways and communal areas.
Stairways and circulation spaces.
Schools and public buildings.
Hotels and hospitality premises.
Industrial and commercial facilities.
Energy-efficient automatic lighting systems.
Technical Specifications
Current
10 A
Voltage
230 V
Phase
Single Phase
Manufacturer
Finder
Series
18 Series
Model
18.51.8.230.0300
Product type
PIR movement and presence detector
Sensor technology
Passive infrared (PIR)
Supply voltage
110–230 V AC
Supply frequency
50/60 Hz
Output configuration
1 pole normally open
Rated output current
10 A
Mounting type
Ceiling mounting
Light sensing
Integrated adjustable ambient light sensor
Time control
Adjustable switch-off delay
Protection rating
IP40
Application
Automatic lighting control
HS Code
85365080
Country of Manufacture
Italy
Frequently Asked Questions
What is the Finder 18.51.8.230.0300 used for?
The Finder 18.51.8.230.0300 is a PIR movement and presence detector used to switch lighting automatically according to detected movement and ambient light conditions.
What supply voltage does the Finder 18.51.8.230.0300 require?
The detector is designed for a 110–230 V AC supply, making it suitable for common mains-powered lighting installations.
What is the contact rating of the Finder 18.51.8.230.0300?
The detector features a single-pole output contact rated at 10 A for switching compatible electrical loads.
Does the Finder 18.51.8.230.0300 detect ambient light?
Yes. It incorporates a light-dependent sensor so automatic switching can be configured according to the surrounding illumination level.
Where is the Finder 18.51.8.230.0300 typically installed?
The detector is designed for ceiling installation in areas such as offices, corridors, communal spaces, commercial buildings and other indoor locations requiring automatic lighting control.
Trusted for Automatic Building Control
Finder 18 Series PIR detectors provide reliable movement and presence sensing for commercial, industrial and public buildings, helping installers create convenient and energy-efficient automatic lighting systems.
Current
10 A
Voltage
230 V
Phase
Single Phase
Manufacturer
Finder
Series
18 Series
Model
18.51.8.230.0300
Product type
PIR movement and presence detector
Sensor technology
Passive infrared (PIR)
Supply voltage
110–230 V AC
Supply frequency
50/60 Hz
Output configuration
1 pole normally open
Rated output current
10 A
Mounting type
Ceiling mounting
Light sensing
Integrated adjustable ambient light sensor
Time control
Adjustable switch-off delay
Protection rating
IP40
Application
Automatic lighting control
HS Code
85365080
Country of Manufacture
Italy
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
Priority sourcing and supply support
Flexible payment terms for qualifying organisations
Support for engineering, maintenance, and operations
500 +
Stock lines ready to ship
1,000 +
Same day dispatches
3500 +
Customers supported
28
Trusted Manfacturers
● frequently asked questions
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...