The wall or ceiling mount DS720i TriTech® PIR and Microwave Detector covers up to 91 m (300 ft). Motion Monitor and Anti-masking protection provide coverage integrity. Field replaceable mirrored optics and three different coverage patterns provide
installation flexibility.
Functions:
Alarm Memory
Signal Processing
Uses passive infrared and microwave technologies to provide an alarm condition when both fields of
protection are simultaneously activated. Alarm signals must meet the signalling requirements of both
technologies to activate an alarm. Adjustable PIR and microwave sensitivity.
PIR Signal Processing
Uses Motion Analyzer II multiple thresholds and timing windows to analyse timing, amplitude, duration, and
polarity of signals to make an alarm decision. Will not alarm on extreme levels of thermal and illumination
disturbances caused by heaters and air conditioners, hot and cold drafts, sunlight, lightning, and moving
headlights. Two sensitivity settings are provided.
Microwave Signal
Uses pattern recognition circuitry to identify and ignore repetitive false alarm sources. Adaptive
processing adjusts to background disturbances to reduce false alarms while maintaining catch
performance.
Test Features
A high-efficiency walk test LED is visible throughout the coverage pattern (reducing installation time). LED
flashes to indicate a trouble condition. Internal noise voltage test pins use a standard analog meter to provide
precise pattern location and background disturbance evaluation. Separate test LEDs for PIR and microwave
activation. The alarm LED can be controlled remotely.
Alarm relay contact type | NC/NO |
Detection radius (m) | 90 m |
Dimension (H x W x D) (mm) | 208 x 195 x 130 mm |
Operating temperature (°C) | -29 – 49 °C |
Operating voltage (VDC) | 9 – 15 VDC |
Tamper relay contact type | NC |
Transmission frequency (GHz) | 10.5250 GHz |
Trouble relay contact type | NC |
Wireless transmission frequency | 10.525 GHz |