The Honeywell DT8035 Dual Tec Motion Sensor is a hardwired motion detecting sensor that utilizes two types of motion detection methods. The device features built-in PIR and microwave sensors, and both sensor methods must be activated for the sensor to activate. This reduces false alarms.
The PIR sensor inside the DT8035 works by looking out for changes in infrared energy that occur with movement. If a person or large object comes into the field of view of the DT8035, the sensor will detect the change in passive infrared energy. The user can adjust the sensitivity of the PIR sensor in the DT8035 by increasing or decreasing its pulse count. A lower pulse count will reduce the area that a person or object needs to move through for the sensor to activate, thereby making it more sensitive.
As for the microwave sensor, it works by sending out continuous microwave signals. These sensors will return to the DT8035 in a set pattern based on the objects and structures in the room. The only way for this pattern is to change is if there is movement in the area. The strength of the signals can be adjusted to pass through objects and walls. In other words, the microwave sensor can actually detect motion outside the building if the signals are strong enough.
With the DT8035, both the microwave sensor and the PIR sensor must be triggered in order for the sensor to respond. This is very important for dual tec motion sensors with microwave functionality. Remember, microwave signals can detect motion that occurs outside the building if the signals are strong enough. But a PIR sensor will only detect motion that occurs within the same room. By using these technologies and capabilities together, it is very unlikely that false alarms will occur.
The DT8035 measures 3.86"H x 2.24"W x 1.71"D. It provides pet immunity for small animals weighing up to 100 pounds. The detector also features a look down sensor for detecting a person entering the room if placed directly above a door.