Legrand’s lighting and motion management systems encompass a wide range of sensors designed to make buildings more energy efficient by automatically reducing the amount of time lighting is left on unnecessarily.

“Reduced lighting consumption not only lowers operating costs, but also reduces lamp replacement and maintenance requirements and helps decrease Green House Gas (GHG) emissions,” says Sonja Leibbrandt, marketing and pricing manager, Legrand South Africa. “Motion and lighting management sensors can operate in occupancy mode where lights are automatically switched on or off according to occupancy, or in vacancy mode for additional energy saving, where lights are manually switched on and automatically switched off when the person leaves the area. These sensors can also use passive infrared technology (PIR), ultrasonic or dual technologies.

“Lighting management sensors are suitable for areas of a building with or without natural light, including passages, corridors, hallways, staircases and restrooms and also for offices, storage rooms and warehouses. These sensors are also available with advanced features for installation outdoors and in humid areas of domestic, commercial and industrial buildings.

Legrand’s lighting management sensors for controlling a single circuit in outdoor and damp areas with natural light, have an IP55 index protection rating to guard against the ingress of dust and water. These sensors, with three wires and neutral, have an automatic switch on/off occupancy mode setting and switch off automatically when there is sufficient natural light in the area. There is an adjustable time delay between 5 s and 59 minutes and a light level threshold from 5 to 1 275 lux.

These PIR wall or ceiling mounted multi lens sensors have a 270° infrared detection with a 18 m range and a 0,7 W standby consumption. The recommended fixing height is 2,5 m and with the use of accessory, these units can also be mounted in a corner. (0 489 33)

Lighting sensors for controlling a single circuit in outdoor and damp areas without natural light have automatic on/off controls, manual adjustment of the light level threshold and time delay via a potentiometer.

PIR direct wall/surface mounting motion sensors, with a recommended 2,5 m fixing height, have 360° infrared detection and an 8 m range. These sensors have adjustable light level thresholds from 10 to 1 275 lux and an adjustable time delay between 10 s and 10 minutes. Standby consumption is 0,75 W.

PIR sensors for wall or ceiling mounting, with a directional head, have a 360° infrared detection and standby consumption of 0,9 W. The light level threshold is adjustable from 1 to 1000 lux and the time delay is between 12 s and 16 minutes. The minimum fixing height is 1,7 m and the optimum distance between sensors is 6 m.

Legrand’s lighting management solutions for outdoor areas and humid areas also includes sensors for managing multiple circuits.

PIR technology direct wall/surface mounted 180° sensors have a front range detection of 6 x 15 m and consumption of 20 mA on standby. Connection to the controller is via a cord or RJ 45 cable.

Legrand’s lighting management systems have been designed and manufactured to avoid energy waste as the building only consumes just the amount of energy it needs, when it needs it.