The Honeywell Intellisense DT-450T is a 50'x40' Form A Passive Infrared Detector in the DT-400T series.
The
IntelliSense DUAL TEC DT-400T series motion sensors have been paid the
highest compliment possible by being the most copied motion sensor in
the world. Based on microwave/PIR technology, the DT-400T series'
patented microwave activation circuit provides superior catch
performance and virtually eliminates false alarms. For years many
manufacturers did not believe that dual technology is the wave of the
future. Today, almost all major manufacturers of motion sensors in the
security industry have introduced products to directly compete with the
industry standard DT-400T series. The DT-400T series motion sensors
provide cost-effective, proven performance, and are found in
applications from homes to palaces around the world