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The DD 400 Series of detectors makes no compromises because it is a dual technology detector. It utilises all the good features of our PIRs, including sealed Gliding Focus Mirrors and the latest 4D signal processing. Add to that the Aritech high quality microwave module, where the latest design using Twin Opposed Antennae has been used to ensure a better signal to noise ratio and better microwave direction.

Distance of Motion (DoM) Processing converts the analogue signal into a digital one where the custom ASIC can effectively measure the distance travelled by the intruder, irrespective of the intruders speed or distance from the detector. The DD400 Series is able to adjust both the PIR and Microwave channels simultaneously and also features solid curtains of detection.