Astro Casambi PIR and Light Sensor

The Astro Casambi PIR and Light Sensor is a compact, weatherproof lighting accessory from Astro. This unit combines passive infrared motion detection with a photocell to automate switching and dimming of connected fittings, designed for surface-mounted exterior and industrial lighting where reliable, hands-off control is essential.

Form follows function: a square, boxy housing with a central translucent hemispherical dome lens provides a wide detection field while two visible flat-head screws secure the front plate. The enclosure uses a matte light-grey finish and a bottom cable gland for sealed wiring access, giving a straightforward, utilitarian appearance that fits where durability matters more than decoration.

The sensor is built as a two-part assembly with an internal wiring compartment, making installation and maintenance simple. The rigid, weather-resistant plastic enclosure and visible sealing points communicate a no-nonsense approach to long-term outdoor performance.

Performance-wise, the multi-faceted dome is tuned for broad-angle PIR coverage while the integrated photocell measures ambient light to prevent unnecessary switching. It is supplied as a Casambi-capable device for easy integration into wireless lighting control systems and is suitable for controlling switching and dimming of compatible fixtures.

Engineered for tough conditions, the unit carries an IP66 rating for protection against dust and powerful water jets and is intended for surface mounting with secure conduit or gland entry. Internal wiring and configuration are accessed via the removable front plate. The product is backed by a three-year manufacturer warranty.

At Light Monster we make good lighting easy to choose: this Astro sensor pairs rugged, purpose-driven design with reliable performance at a competitive price. Count on our lighting expertise and clear, no-fluff guidance to help you spec the right control for your project.