PIR/US Motion Detector 360º Range 8m Recessed/Ceiling Installation

The Legrand 048806 motion and presence detector is a dual-technology ceiling sensor that combines passive infrared and ultrasonic detection to automatically control lighting. It offers 360-degree coverage and a detection diameter of up to 8 meters at an installation height of 2.5 meters, providing accurate occupancy detection in offices, meeting rooms, classrooms, and other workspaces.

Thanks to the combination of both detection technologies, the sensor improves sensitivity to movement and presence in situations where a conventional detector may be less effective. It also monitors the level of natural light to manage the switching on of luminaires according to the configured conditions, helping to optimize energy consumption.

Legrand dual-technology presence detector

Reference 048806 belongs to Legrand's Mosaic range and uses two detection systems simultaneously:

• Passive infrared: detects variations in thermal radiation produced by the movement of people within the monitored area.
• Ultrasonic: detects presence through variations produced in ultrasonic waves within the space.

The combined use of both systems provides high detection sensitivity and coverage especially suited to workspaces where movements of varying intensity may occur.

360-degree coverage and 8-meter diameter

The detector offers a 360-degree horizontal detection angle. Installed at an optimal height of 2.5 meters, it provides a circular detection area of up to 8 meters in diameter.

According to Legrand technical data, the maximum lateral range is approximately 4 meters and the frontal range can reach up to 6 meters, forming a total detection zone of 8 meters in diameter on the floor.

When several detectors are installed in the same space, Legrand recommends an optimal distance of approximately 6 meters between sensors.

Especially suitable for offices and workspaces

Legrand recommends this detector for areas with natural lighting, such as individual offices, open-plan offices, meeting rooms, classrooms, and other professional spaces.

The sensor simultaneously monitors the presence of people and the ambient light level to control the lighting circuit only when necessary according to the configured settings.

Lighting control based on presence and brightness

In addition to detecting movement and presence, the Legrand 048806 allows adjustment of the brightness threshold that determines lighting behavior.

The light level adjustment range is between 5 and 1,275 lux, allowing the detector response to be adapted to different levels of natural light.

This helps prevent unnecessary switching on of luminaires when the amount of available light in the space is sufficient.

Adjustable detection sensitivity

The detector sensitivity can be configured to suit the specific characteristics of the space and the intended use.

Legrand provides adjustment of the main parameters using compatible configuration tools, allowing precise setup directly during installation.

Configurable time delay

The detector allows you to configure the time during which the lighting remains on after detection.

According to the product technical specifications, the minimum on-time can be adjusted from 5 seconds and the maximum operating cycle reaches 59 minutes.

This makes it possible to adapt operation to areas with different occupancy patterns, from transit areas to rooms where users remain for extended periods.

Automatic occupancy-based operation

In occupancy mode, the system can automatically manage the switching on and off of lighting according to detected presence and the configured light conditions.

This automation helps reduce the time luminaires remain on unnecessarily, especially in spaces used intermittently.

Possibility of absence mode operation

The detector can also be used with a compatible push-button to operate in absence mode. In this configuration, switching on is done manually via push-button and switching off can be done manually or automatically when the occupancy period ends.

Legrand indicates the 077040 reference as the compatible push-button for this application.

230-volt supply with neutral

The Legrand 048806 uses a 3-wire connection with neutral and operates at a nominal voltage of 230 volts AC.

The supported operating frequency is between 50 and 60 hertz.

Its standby power consumption is approximately 0.8 watts, allowing the detection functions to remain permanently active with low consumption.

Switching power up to 2,000 watts

The current Legrand technical sheet indicates a maximum switching power of 2,000 watts for the device.

It also specifies a maximum inrush current of 8.5 amperes. The connected load must always be selected in compliance with these values and the specific characteristics of the lighting technology used.

Recessed installation in suspended ceilings

The detector is primarily designed for a recessed ceiling installation. It can be fixed directly into a suspended ceiling using the included mounting claws.

It can also be installed in a 50-millimeter-deep Batibox box, offering different options for integrating it into the building installation system.

Surface mounting option

Although the product is mainly intended for recessed mounting, Legrand allows a surface installation on the ceiling using the specific 048875 reference accessory.

This makes the detector easier to use in renovations or spaces where recessed mounting is not possible.

Connection via automatic terminals

The Legrand 048806 features automatic terminals to make wiring during installation easier and faster.

This system eliminates the need for conventional screw tightening on the detector connections and provides a quick and secure connection when suitable conductors are used.

Configuration using Legrand tool

The detector parameters can be precisely adjusted using the Legrand configuration tool reference 088240.

This allows factors such as sensitivity and light level to be adapted on site to achieve a response better suited to the dimensions, environmental conditions, and usage pattern of each space.

IP20 protection for indoor use

The detector has an IP20 protection rating and is mainly intended for indoor installations in dry environments.

Its operating ambient temperature ranges from -5 to 45 degrees Celsius, allowing use in the usual conditions of offices, educational centers, meeting rooms, and other indoor buildings.

White thermoplastic housing

The sensor body is made of white thermoplastic material, with a glossy finish and a tone similar to RAL 9003.

Its discreet design makes it easy to visually integrate into the white ceilings commonly found in offices, retail premises, and tertiary spaces.

Legrand 048806 technical specifications

• Brand: Legrand.
• Range: Mosaic.
• Reference: 048806.
• EAN code: 3245060488062.
• Product type: motion and presence detector for lighting.
• Detection technology: passive infrared and ultrasonic.
• Detection angle: 360 degrees.
• Coverage diameter: 8 meters.
• Optimal installation height: 2.5 meters.
• Maximum lateral range: 4 meters.
• Maximum frontal range: 6 meters.
• Optimal distance between detectors: 6 meters.
• Control according to natural light level: yes.
• Adjustable sensitivity: yes.
• Adjustable brightness threshold: between 5 and 1,275 lux.
• Minimum on-time: 5 seconds.
• Maximum configured operating time: 59 minutes.
• Nominal voltage: 230 volts AC.
• Frequency: between 50 and 60 hertz.
• Connection type: 3-wire with neutral.
• Maximum switching power: 2,000 watts.
• Maximum inrush current: 8.5 amperes.
• Standby consumption: 0.8 watts.
• Electrical connection: automatic terminals.
• Mounting type: recessed ceiling.
• Direct fixing in suspended ceiling: yes, using included claws.
• Box installation: compatible with 50-millimeter-deep Batibox box.
• Surface mounting: possible with Legrand 048875 accessory.
• Protection rating: IP20.
• Operating ambient temperature: between -5 and 45 degrees Celsius.
• Material: thermoplastic.
• Color: white.
• Similar color: RAL 9003.
• Remote operation: yes.
• Compatible configuration tool: Legrand 088240.
• Absence mode via push-button: yes.
• Compatible push-button indicated by Legrand: reference 077040.

Precise detection to automate lighting

The Legrand 048806 combines passive infrared and ultrasonic detection to provide 360-degree presence detection in spaces up to 8 meters in diameter. Dual technology improves detection in offices, meeting rooms, classrooms, and open spaces where reliable lighting automation is required.

Its adjustable sensitivity and brightness settings, configurable time delay, low standby consumption, automatic terminal connection, and different mounting options make it possible to adapt the detector to the specific needs of each installation and take advantage of available natural light to reduce unnecessary switching on.