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C&K DUAL Technology 7450 Motion Sensor
K-Band Technology
Data Sheet PDF
Designed for tough, commercial environments, the DT-7450 Motion Sensor
achieves reliable protection with improved false alarm immunity through DualCore™
signal processing. Optimum performance is achieved using K-Band microwave technology and
Uniform Sensitivity Optics
Features
Advanced DualCore™ Signal Processing - DualCore signal
processing analyzes PIR and microwave signals through the DT-7450’s microcontroller.
DualCore processing supports a multitude of advanced functions, including concurrent
diagnostics, digital fluorescent light interference filter, digital adaptive microwave
threshold, adaptive baselines, and bi-directional temperature compensation.
Superb Detection Through K-Band Technology - K-Band microwave
technology delivers sharp detection without holes or weak spots. The custom made source
offers pattern shaping to fill the protected area with a broad, balloon-shaped pattern
which matches the PIR pattern. It also offers pattern containment to reduce the
penetration of microwave energy through walls.
Enhanced False Alarm Prevention Features - The DT-7450 offers more
than the standard features that protect against false alarms due to RF signals,
electrostatic discharge, and electrical overstress. The patented black bug guard improves
white light immunity and digital adaptive microwave thresholds automatically adjust for
room disturbances.
Self-Testing for Consistently Reliable Operation - Concurrent
diagnostics assure optimum performance and reliability. Self-testing is performed upon
power-up and at least once every hour on the PIR, microwave, PCB circuitry and temperature
compensation circuitry.
Sturdy, Attractive Housing - The sleek, sturdy housing fits into a
variety of building styles and blends with any room decor. ABS plastic is used for shock
and impact protection. The housing offers a convenient wiring channel, knockouts for
mounting and wiring, and easy access to wiring terminals.
DualCore Signal Processing - PIR and microwave signals are
analyzed 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 features.
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-7450 consistent coverage throughout the
protected area.
Digital Adaptive Microwave Thresholds - The DT-7450 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. Frequency of the filter is selectable between 60 Hz or 50 Hz via DIP switch.
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 compromise 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.
Specifications
Range:
50’ x 60’ (15 m x 18 m)
Alarm Relay:
DT-7450: Energized Form A
DT-7450C: Energized Form C
125 mA, 25 VDC, 20 Ohm series resistor
Tamper:
(NC) 50 mA, 24 VDC
Power Requirements:
7.5 - 16 VDC (8.0 - 16 VDC for UL installations)
DT-7450: 25 mA typical, 30 mA max. at 12 VDC
DT-7450C: 30 mA type., 35 mA max. at 12 VDC
AC Ripple: 3 V peak-to-peak at 12 VDC nominal
Frequencies:
24.125 GHz (K-Band)
PIR White Light Immunity:
6,500 lux typical
Fluorescent Light Filter:
50 Hz or 60 Hz, selectable
RFI Immunity:
30 V/m, 10 MHz - 1000 MHz
Operating Temperature:
14° to 131° F (-10° to 55° C)
5% - 95% relative humidity (non-condensing)
Self-test Intervals:
Microwave supervision Continuous PIR self-test Once every hour
Temp. comp. Every 30 seconds
PIR Fields of View:
22 long range edges
12 intermediate edges
Six lower edges
Four look-down edges
Dimensions:
4.685" x 2.795" x 1.654"
11.9 cm x 7.1 cm x 4.2 cm
Sensitivity:
Standard: 3-4 steps
Intermediate: 2-3 steps
Detection Patterns
Click To Enlarge Picture
Accessories:
SMB-10 Swivel Mount Bracket
SMB-10T Swivel Mount Bracket w/Tamper
Note: Swivel mount brackets should not be used for pet immune
applications.
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