100-205 DIGITAL DUAL MICROWAVE PIR XDT200H NESS 100-205Overview 100 205 DIGITAL DUAL MICROWAVE PIR RELIABLE HARSH ENVIRONMENT MOTION PROTECTION The Ness QDT200H A (or XDT200H) Dual Technology PIR Microwave is a motion detector specially designed for the protection of areas of harsh environment or where added protection against false alarms is required. Installed in rooms or in hallways, the dual detection technology detector protects you by detecting intruders body temperature using infra red technology