Intellisense DT7550 Grade 3 Dual Technology Detector with MaskAlert™

 

DT7550A-UK - UK installations
DT7550CEU - Republic of Ireland installations only

Designed for high security installations where masking is a concerned, the DT7550C combines DualCore signal processing with MaskAlert anti-mask technology to achieve reliable commercial performance. It is graded to PD6662 Grade 3.

Features

MaskAlert™ Anti-mask Technology
MaskAlert identifies a sequence of events with specific timing relationships to detect the act of masking. When a masked condition has been detected, indication is provided through a separate Trouble Output relay. In the event that the detector was masked while the unit was unpowered, MaskAlert also includes an anti-mask check at power-up.

DualCore™ Signal Processing
PIR and microwave signals are analysed in the microcontroller in multiple domains, including amplitude, time, frequency and duration to provide superior false alarm immunity without compromising detection. DualCore processing not only supports alarm functions, but also advanced temperature compensation, diagnostics and false alarm feature.

K-band Microwave Technology
K-band Microwave technology delivers sharp detection and superior false alarm immunity through pattern shaping and pattern containment. Pattern shaping fills the protected area with a broad, balloon-shaped pattern which matches the PIR pattern. Because K-band is a higher frequency, the amount of microwave energy that penetrates walls is reduced, containing the pattern within the coverage area and reducing false alarms.

Uniform Sensitivity Optics
The custom-designed Fresnel lens provides the same sensitivity for human targets at the edge of the pattern as exists directly in front of the sensor, giving the DT-7550C UK consistent coverage throughout the protected area.

Digital Adaptive Microwave Thresholds
The DT-7550C UK digitally adjusts its thresholds to account for room disturbances such as ceiling fans and other repetitive moving objects, which are not an intrusion event. The result - excellent false alarm immunity even in "active" rooms.

Digital Fluorescent Light Interference Filter
Potential false alarms due to fluorescent lights are eliminated with a digital filter with infinite rejection.

White Light Immunity
A patented black bug guard reduces false alarms by providing 6.500 lux of white light immunity. This helps reduce false alarm problems caused by lights, flashlights or reflective objects.

Concurrent Diagnostics
Optimum performance and reliability are assured through comprehensive diagnostics that do not comprise detection during testing. In addition to performing a full self-test upon power-up, microwave supervision is performed continuously; PIR supervision is performed once every hour. Temperature compensation is monitored and updated every 30 seconds.

Bi-directional Temperature Compensation
The DT-7550C UK operates effectively in harsh environments (-10º ~ 55ºC). Bi-directional temperature compensation adjusts above and below body temperature for improved detection and false alarm immunity.

Height:    119mm
Width:      71mm
Depth:      42mm