Finder 18.21.8.230.0300 is a ceiling-mounted PIR movement detector with a 10 A single-pole volt-free output contact, 120–230 V AC supply and adjustable light and switch-off settings for automatic indoor lighting control.
£89.54
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.
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.
| Current | 10 A |
|---|---|
| Voltage | 230 V |
| Phase | Single Phase |
| Manufacturer | Finder |
| Series | Series 18 |
| Model | 18.21.8.230.0300 |
| Product type | PIR movement detector |
| Supply voltage | 120–230 V AC |
| Supply frequency | 50/60 Hz |
| Output | Volt-free contact |
| Contact configuration | 1 NO (SPST-NO) |
| Rated contact current | 10 A |
| Movement detection angle | 110° |
| Movement detection range | up to 8 m |
| Ambient light threshold | adjustable, 5–350 lx |
| Switch-off delay | adjustable, 10 s–12 min |
| Contact material | AgSnO2 |
| Protection rating | IP40 |
| Ambient temperature range | -10–+50 °C |
| Mounting type | Indoor surface-mounted ceiling installation |
| HS Code | 85365080 |
| Country of Manufacture | Italy |
The Finder 18.21.8.230.0300 is a PIR movement detector used to automatically control lighting and compatible electrical circuits when movement is detected in indoor areas.
The detector has a single-pole 1 NO contact rated at 10 A.
The 18.21.8.230.0300 operates from a 120–230 V AC, 50/60 Hz supply.
Yes. This version features a volt-free output contact, allowing the switched circuit to be electrically separate from the detector supply.
The detector is designed for surface-mounted installation on indoor ceilings and is suitable for areas such as corridors, stairways, offices and communal spaces.
Finder Series 18 movement detectors provide dependable automatic lighting control for residential, commercial and industrial installations, combining practical PIR detection with flexible adjustment and straightforward electrical integration.
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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...