Finder 18.81.8.230.0000 – 18 Series PIR movement and presence detectors

Why Choose the Finder 18.81.8.230.0000 Outdoor PIR Motion Detector?

The Finder 18.81.8.230.0000 is a professional 230 V AC outdoor PIR motion detector designed for automatic lighting control in residential, commercial and industrial environments. Part of the Finder Series 18 movement and presence detector range, this white, wall-mounted sensor combines passive infrared motion detection, an adjustable light threshold and a volt-free switching contact in a weather-resistant enclosure.

Featuring a 110° detection angle, a maximum forward detection range of approximately 10 m and a 10 A normally open relay contact, the Finder 18.81.8.230.0000 provides dependable automatic control of suitable outdoor lighting circuits. Its adjustable sensor head allows the detection area to be directed towards entrances, pathways, driveways and other locations requiring movement-activated illumination.

With an IP55 protection rating, adjustable switch-off delay from 18 s to 15 min, and adjustable ambient light threshold from 10 to 350 lx, this motion detector provides flexible lighting automation while helping reduce unnecessary energy consumption. An additional switching push-button connection allows convenient integration with suitable manual control arrangements.

Key Advantages

• Automatic outdoor lighting control using passive infrared motion detection.
• IP55-rated enclosure for protection against dust and water jets.
• 230 V AC supply for conventional mains-powered installations.
• 10 A normally open volt-free contact for flexible lighting control.
• 110° detection angle for monitoring outdoor access areas.
• Maximum forward detection range of approximately 10 m.
• Adjustable sensor orientation for accurate coverage of the required area.
• Adjustable ambient light threshold from 10 to 350 lx.
• Adjustable switch-off delay from 18 s to 15 min.
• Connection for an external switching push-button.
• Suitable for compatible LED lighting loads up to 150 W.
• Helps improve convenience, security and lighting energy efficiency.

Key Features

• Finder Series 18 PIR movement detector.
• Type 18.81 for outdoor wall-mounted installations.
• White housing for discreet installation on building exteriors.
• 230 V AC, 50/60 Hz operating supply.
• One normally open contact (1 NO / SPST-NO).
• 10 A rated switching current.
• Volt-free relay output for suitable control circuits.
• Passive infrared sensing technology.
• 110° horizontal detection coverage.
• Maximum forward detection distance of approximately 10 m.
• Adjustable PIR sensor head for flexible positioning.
• Integrated ambient light sensing for daylight-dependent operation.
• Adjustable lighting activation threshold and switch-off timing.
• External push-button switching connection.
• IP55 protection and outdoor operating temperature range.
• Surface mounting with screw terminal connections.

Reliable Outdoor Lighting Automation with Adjustable PIR Detection

Outdoor PIR motion detectors provide a convenient way to activate lighting automatically when movement occurs within a monitored area. They are particularly useful around building entrances, pathways, driveways and other access locations where lighting is required intermittently rather than continuously.

The Finder 18.81.8.230.0000 uses passive infrared technology to detect changes in infrared radiation associated with moving people. Its adjustable sensor head and 110° detection angle allow the monitored area to be positioned according to the installation, helping provide effective coverage while reducing unwanted activation from areas outside the intended detection zone.

The integrated ambient light sensor allows the installer to set a switching threshold between 10 and 350 lx. This enables the detector to activate lighting only when the surrounding illumination falls below the selected level. The adjustable switch-off delay, from 18 s to 15 min, determines how long the connected lighting remains energised following the last detected movement.

A key feature of the Finder Type 18.81 is its volt-free normally open relay contact. Unlike detectors with a permanently linked switched-live output, a volt-free contact provides greater flexibility when integrating the detector into suitable control circuits. The device also includes a connection for an external switching push-button, allowing additional manual control functionality according to Finder's wiring arrangements.

The IP55-rated enclosure provides protection against dust ingress and water jets, making the detector suitable for outdoor wall-mounted installations when correctly fitted. Its operating temperature range of −30 to +50 °C supports use in a variety of seasonal weather conditions.

For optimum performance, the sensor should be positioned to monitor the intended approach direction while avoiding unnecessary exposure to heat sources, moving vegetation and other potential causes of false activation. Connected lighting loads must remain within the relevant contact and lamp ratings, particularly where LED drivers generate high inrush currents.

Typical Applications

• Residential outdoor security lighting.
• Driveway and garage entrance illumination.
• Garden and pathway lighting.
• Commercial building entrance lighting.
• Car park and pedestrian access lighting.
• Industrial premises perimeter lighting.
• Warehouse and loading bay exterior illumination.
• Automatic floodlighting control.
• Communal outdoor lighting installations.
• Building automation and energy management systems.
• Movement-activated access area lighting.
• Outdoor lighting refurbishment and electrical upgrades.