Outdoor Dual Technology/AM detector 10.525 GHz 10/20/30m selectable. DDI602AM-F1 Outdoor Dual Technology/AM Detector is an outdoor motion detector and alarm trigger using two independent passive infrared elements plus a microwave sensor module. In addition it has an Anti-Masking functionality achieved by active infared technology that will detect masking events as required by the EN Grade III standard. DDI602AM-F1 delivers precise, reliable presence detection.