Sygonix SY-5251904 Recessed Ceiling PIR Motion Detector 360° Relay White

In an office corridor or open-plan workspace, the Sygonix SY-5251904 recessed ceiling motion detector automatically switches lighting when someone enters the room, then turns it off after an adjustable delay. Its 360° detection angle covers the area below the sensor, making it suitable for mounting in suspended ceilings at heights from 2.2 to 4 metres.

Key specifications

• Detection angle: 360°
• Detection range: up to 6 m at 2.5 m installation height
• Sensor type: passive infrared (PIR)
• Operating voltage: 220–240 V/AC, 50/60 Hz
• Max. switching capacity: 1200 W incandescent, 300 W LED/ESL
• Adjustable time delay: 10 s to 15 min
• Adjustable light sensitivity: 3–2000 lux
• IP rating: IP20
• Housing material: polycarbonate
• Installation opening diameter: 90 mm
• Standby power consumption: 0.5 W
• Operating temperature: -20 °C to +40 °C

Why choose it

The detector is designed for recessed ceiling installation and blends into the ceiling with a white finish. It uses a relay output, which allows it to switch a wide range of lighting loads directly. The time delay and light sensitivity are adjustable to match the room's usage and ambient light conditions.

Ideal use cases

• Automatic lighting control in corridors, stairwells, and open offices
• Energy saving in areas with intermittent occupancy
• Replacement for existing recessed ceiling motion detectors

Good to know

The detector is intended for indoor use only (IP20). It requires a 90 mm installation opening and a connection to 220–240 V AC mains. The PIR sensor responds to moving heat sources, so it works best when people walk through the detection zone.