PIR sensors respond to sudden changes in background heat energy by detecting the presence of heat energy at a wavelength emitted by humans. They must be able to have a direct line of sight to an occupant to detect his presence. A curved faceted lens defines the field of view as a fan-shaped series of vertical and horizontal cones of detection projected from the sensor. The further an occupant is from the sensor, the wider the gaps between these cones. Therefore, the sensor s sensitivity to motion decreases with distance away from the sensor.

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Legrand has a complete offer, tailored to the commercial, industrial and residential markets, making it a reference worldwide in nearly 180 countries. Control and monitoring of installations, cable management, power distribution, distribution of "voice-data-image" systems . Legrand provides numerous solutions for managing lighting, heating, energy, networks and access in buildings. Its product offering is particularly extensive, with over 178,000 products in its catalogues, divided into 98 product families

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Where did it all start? 1949-Waco Industries was established in 1949 importing mainly industrial plugs and sockets. Later on, we started manufacturing at our own premises. 1980's- Waco Cape Town and Waco Durban branches were opened. 1991- Waco became part of the Voltex group of companies operating as main importer of products in the group, as we distribute to the 76 Voltex branches which are strategically situated throughout Southern Africa, as well as to more than 500 independent wholesalers.

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