Dualtec, twintec etc movement detectors
Dual Technology
Honeywell
Honeywell DT8016AF5 DT Motion Sensor with mirror optics Grade 3
Texecom
Texecom A20 : 20m Anti-Masking Dual Tech
Texecom
Texecom CA - Ceiling Mount Quad Anti-Masking Dual Tech
Optex
Optex FMX-DT-X8 Dual Tech Indoor PIR Motion Detector
Risco
Risco iWise Dual Tec 15m (Rokonet)
Siemens/Vanderbilt
Siemens MAGIC Dual Detector, 12m wide angle
Visonic
Visonic PowerG Wireless Dual Tech with Anti Mask
Scantronic
Scantronic NEW Wired Dual Tech Detector, PET Tolerant
Siemens/Vanderbilt
Siemens MAGIC Dual Detector, 18m wide angle
Honeywell
Risco
Risco iWise Dual Tech Pet Immune 11m
Optex
Optex DT 15m x15m active IR digital anti-masking, grade 3