The Direction Control Versions of the PIRAMID XL offer a field adjustable switch to control the direction of a target based on the direction of movement. A three-position digital switch allows the sensor to be set to detect 1) only approaching targets, 2) only receding targets or 3) both approaching and receding targets.
There are three different versions of the Direction Control PIRAMID XL. Each version varies somewhat in detection capabilities.
1. Models SDI-76XL-MW-VD and SDI-77XL-MW-VD are single technology microwave sensors that are best for detecting vehicles. This version comes in both a wide and narrow pattern and will detect vehicles (cars) at distances of approximately 100 ft. 2. Models SDI-76XL-MW-DIR and SDI-77XL-MW-DIR are single technology microwave sensors. The detection parameters are set up to detect pedestrians or intruders rather than vehicles. The sensor is often used in a Lookdown configuration (with PH-5 Lookdown Housing) to protect ladders, towers, the sides of buildings, etc. 3 . Models SDI-76XL-DIR and SDI-77XL-DIR are dual technology sensors combining Stereo Doppler Microwave and Passive Infrared sensors. The independent sensor technologies are "And Gated" and must activate simultaneously to create an overall sensor alarm. The detection parameters are set up to detect pedestrians and intruders rather than vehicles. The sensor can be used as a gap filler in outdoor perimeter systems. The Dual Technology Version of the direction control sensor is often used in a PH-5 Lookdown Housing to protect ladders, towers, poles, the sides of buildings, etc. against climbers or when detection on the ground at the base of the protected structure is required.
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