DUS804C-UP
Ceiling Mount Universal Sensor Installation Manual
This unit is for indoor use only. This unit is designed for installation in a 64mm diameter hole where the ceiling void is at
least 40mm deep. Select an appropriate indoor mounting location, as detailed in the location guidelines on the following
The DUS804C-UP is a low profile mount 360º ceiling mount sensor that combines motion detection via
both Ultrasonic (UP) & passive inferred (PIR), infra red remote control reception (IR) and ambient light
level detection (PE) in the one device.
In applications such as office buildings, lecture theatres, and homes, the DUS804C-UP universal sensor
can be utilised to detect motion and switch on the lights automatically when motion is detected. When
rooms have been unoccupied for a certain amount of time, lights can be automatically dimmed or switched
off to provide energy savings.
The unit also incorporates a segmented click-up bezel surrounding the motion sensor element. This
enables a portion of the sensing field to be readily masked to prevent nuisance detection from adjacent
doorways or corridors. The same sensor provides IR control reception to enable full remote control over
lights, audio-visual equipment and blinds. A range of hand held infra-red transmitters to complement
DUS804 series universal sensors are available.
In situations where it is critical to maintain precise lighting control for individual workspaces, such as an
office workstation or even air traffic control centers, the DUS804C-UP facilitates light compensation. The
DUS804C-UP can also perform multiple functions at the same time so that automatically going to
“Daylight
Harve
sting” mode once motion has been detected for additional energy savings.
