Finder 18.71.8.230.0000 – 18 Series PIR movement and presence detectors

Why Choose the Finder 18.71.8.230.0000 PIR Movement Detector?

The Finder 18.71.8.230.0000 is a compact, adjustable 230 V AC passive infrared (PIR) movement detector from the Finder Series 18 range. Designed for indoor surface-mounted installation, it automatically switches compatible lighting loads when movement is detected, providing convenient hands-free lighting control for residential, commercial and workplace environments.

Featuring a 110° detection angle, a detection range of up to 10 m and a 10 A normally open switching contact, the Finder 18.71 combines practical movement sensing with direct electrical load control. Its adjustable sensor head enables installers to direct the detection field towards the required area, while the integrated ambient light sensor helps prevent unnecessary lighting operation when sufficient natural light is available.

A distinguishing feature is its automatic self-learning switch-off timing. Instead of relying solely on a manually configured delay, the detector adapts its timing behaviour according to detected activity. Available in a discreet white housing with IP40 protection, the Finder 18.71.8.230.0000 offers a modern solution for efficient indoor lighting automation.

Key Advantages

• Automatic PIR movement detection for convenient hands-free lighting control.
• 230 V AC supply for integration into compatible mains-powered lighting installations.
• 10 A normally open contact for switching appropriately rated electrical loads.
• 110° detection angle provides broad coverage of indoor spaces.
• Up to 10 m detection range for effective monitoring of selected areas.
• Adjustable sensor head allows the detection direction to be tailored to the installation.
• Automatic self-learning timing adapts the lighting switch-off delay to movement patterns.
• Adjustable ambient light threshold supports daylight-dependent switching.
• 150 W LED lighting rating for compatible 230 V AC LED loads.
• Compact surface-mounted construction supports straightforward installation.
• Simple three-terminal wiring for phase, neutral and switched load.
• White finish integrates discreetly into indoor environments.
• IP40 protection for appropriately protected indoor locations.
• Helps reduce unnecessary lighting operation in intermittently occupied spaces.

Key Features

• Finder Series 18 PIR movement detector.
• Manufacturer reference: 18.71.8.230.0000.
• Detector type: Adjustable indoor movement sensor.
• Detection technology: Passive infrared (PIR).
• Nominal supply voltage: 230 V AC.
• Supply frequency: 50/60 Hz.
• Operating voltage range: 184–253 V AC.
• Contact arrangement: 1 normally open (SPST-NO).
• Rated switching current: 10 A.
• Rated switching capacity: 2,300 VA AC1.
• Maximum specified inrush current: 100 A for 5 ms.
• Detection angle: 110°.
• Maximum detection distance: 10 m.
• Adjustable ambient light threshold: 10–350 lx.
• Switch-off timing: Automatic self-learning function.
• Sensor positioning: Adjustable directional head.
• LED lighting load rating: 150 W at 230 V AC.
• Colour: White.
• Mounting: Indoor surface mounting.
• Connection: Screw terminals.
• Protection rating: IP40.

Reliable Automatic Lighting Control with Self-Learning Timing

Indoor lighting systems frequently operate in spaces where occupancy varies throughout the day. Corridors, utility rooms, storage areas and circulation spaces may only require illumination when someone is present. The Finder 18.71.8.230.0000 addresses this requirement by combining PIR movement detection with an integrated switching contact, allowing suitable lighting loads to operate automatically when movement is detected.

The detector uses passive infrared technology to sense changes in infrared radiation associated with movement within its detection field. Its 110° detection angle and range of up to 10 m make it suitable for monitoring selected indoor areas. Actual detection performance depends on mounting position, movement direction, ambient conditions and potential obstructions.

One of the principal advantages of the Type 18.71 is its self-learning timing algorithm. Rather than requiring a fixed manual switch-off delay, the detector automatically adapts its timing according to observed movement patterns. This helps balance lighting convenience with reduced unnecessary operating time.

The integrated ambient light sensing function provides another layer of control. With a selectable threshold between 10 and 350 lx, the detector can be configured to activate connected lighting only when the surrounding illumination falls below the chosen level. This is particularly useful in spaces receiving varying amounts of daylight.

The adjustable sensor head provides flexibility during installation. By directing the detection field towards the intended area, installers can improve coverage and help minimise unwanted activation from movement outside the required zone. The detector's compact white housing also makes it suitable for visually discreet installations.

For electrical switching, the Finder 18.71.8.230.0000 incorporates one normally open contact rated at 10 A, with a specified 2,300 VA AC1 switching capacity. Finder also provides load-specific ratings, including 150 W for LED lamps at 230 V AC. These individual ratings are important because LED drivers and other electronic loads may produce significant switch-on currents.

The detector uses a straightforward three-terminal connection arrangement for phase, neutral and the switched load. It is designed for indoor surface mounting and has an IP40 protection rating. It should not be installed in locations requiring outdoor weather resistance or protection against water ingress.

Installation should be carried out by a competent electrician with the circuit safely isolated. The connected lighting load must remain within the applicable switching ratings, and the sensor should be positioned and tested to confirm that its detection field covers the intended area.

Typical Applications

• Automatic indoor corridor lighting.
• Residential hallway and entrance lighting.
• Utility rooms and storage areas.
• Office circulation spaces.
• Commercial building lighting control.
• Indoor stairway and landing lighting.
• Workshops and ancillary rooms.
• Staff facilities and service areas.
• Small warehouses and indoor storage rooms.
• Energy-conscious lighting refurbishment projects.
• Automatic switching of compatible LED luminaires.
• Hands-free lighting in residential and commercial premises.
• Surface-mounted PIR lighting control installations.