18.21.8.230.0300 Finder PIR 1pole 10A 120/230V output contact

Why Choose the Finder 18.21.8.230.0300 PIR Movement Detector?

The Finder 18.21.8.230.0300 is a reliable passive infrared (PIR) movement detector designed for automatic lighting control in indoor commercial, residential and industrial environments. As part of the Finder Series 18 movement and presence detector range, it combines ceiling-mounted motion detection with a volt-free switching contact for flexible integration into lighting and control circuits.

This PIR detector automatically switches connected equipment when movement is detected within its coverage area, helping reduce unnecessary lighting use and improve convenience. Adjustable ambient light and switch-off delay settings allow operation to be tailored to the installation, while the volt-free output contact provides electrical separation between the detector supply and switched circuit.

With a single-pole 1 NO contact rated at 10 A and a 120–230 V AC, 50/60 Hz supply, the 18.21.8.230.0300 is well suited to automatic lighting applications in corridors, stairways, offices, utility areas and similar indoor spaces. Its surface-mounted ceiling design provides practical installation where recessed mounting is not required.

Key Advantages

• Reliable PIR movement detection for automatic lighting control.
• Single-pole 1 NO, 10 A output contact for switching lighting and compatible loads.
• Volt-free output contact provides flexible connection to separate control circuits.
• 120–230 V AC supply suitable for common mains-powered installations.
• Adjustable ambient light threshold helps prevent unnecessary switching during daylight.
• Adjustable switch-off delay allows operation to be matched to the application.
• Surface-mounted ceiling design for straightforward indoor installation.

Key Features

• Finder Series 18 PIR movement detector.
• 1 NO (SPST-NO) volt-free output contact.
• 10 A contact current rating.
• 120–230 V AC, 50/60 Hz supply voltage.
• 110° movement detection angle.
• Movement detection range up to 8 m.
• Adjustable ambient light threshold from 5–350 lx.
• Adjustable switch-off delay from 10 s to 12 min.
• IP40 protection rating.
• Designed for indoor surface-mounted ceiling installation.

Reliable Automatic Lighting Control with PIR Detection

PIR movement detectors such as the Finder 18.21.8.230.0300 detect changes in infrared energy caused by people moving through the monitored area. The detector can then automatically switch a connected lighting or control circuit, eliminating the need for manual switching and helping ensure lights operate only when required.

The Finder Series 18 range is designed for practical movement-based lighting automation. With adjustable light sensitivity and switch-off timing, the 18.21.8.230.0300 can be configured for different room conditions and occupancy patterns, while its volt-free contact makes it particularly versatile when integration with electrically separate control circuits is required.

Typical Applications

• Corridors, hallways and passage areas.
• Stairways and communal access areas.
• Offices and commercial premises.
• Toilets, utility rooms and storage areas.
• Automatic indoor lighting systems.
• Residential and apartment communal areas.
• Building automation and energy-saving lighting controls.