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P/N 1069154U-F1 • REV 4.0 • ISS 05OCT12 
Mounting the unit 
During installation, protect the electronics against water, as 
trapped moisture can affect or damage the unit. 
To mount the detector: 
1.  Drill the wall to accept the two fixing screws, the cable 
entry, and the tamper cup (if used). See Figures 1 and 3.  
A hole-drilling template is provided.  
Notes 
• 
Leave a minimum 10 cm (4 inches) clearance above 
the top of the detector housing to allow the cover and 
the detector to be positioned correctly. 
• 
We recommend using the tamper cup on uneven wall 
surfaces. 
• 
When mounting the units side by side, a minimum 
space of 1 m must be left between the detectors and 
the detectors must not be looking directly towards 
each other. No minimum space is required when 
mounting the units back to back. 
• 
The recommended optimum mounting height for the 
detector is 3 m. Whilst it is possible to mount the unit 
higher, this will give a reduced detection range and 
will require the detection subject to move further 
through the already reduced detection area before an 
activation is signalled. 
2.  Remove the cover assembly by loosening the locking 
screw. Squeeze the sides of the front cover to release the 
internal catches. The cover hinges from the top and lifts 
out of the location slot. See Figure 2. 
3.  Use a razor knife to open a rubber seal to allow the 
cabling into the unit (see Figure 4). Feed standard eight-
core alarm cable into the cable entry. Bare the wires and 
connect to the top PCB terminal block (Figure 5, item 2).  
4.  Screw the unit to the wall ensuring that the tamper pin is 
correctly located and that the tamper microswitch is 
closed. 
To aid installation, two spare tamper feet are provided. 
One is 1 mm shorter and the other is 1 mm longer than the 
tamper foot originally fitted. The tamper foot is a push fit 
and can be removed by carefully pulling it from the pin. 
See Figure 1. 
5.  When the detector is aligned, connected, and 
programmed to suit the installation: 
a.  Fit the cover to the detector base. 
b.  Lightly screw the locking screw. 
c.  Put the top of the locking tool into the small notch on 
each side of the cover, and then apply slight pressure 
until the cover locks into the base, as shown in 
Figure 15. 
d.  Tighten the locking screw. 
Connecting the unit 
The DDI602U-F1 includes jumpers that let you configure 
internal end-of-line (EOL) resistor values, when EOL resistors 
are required. Values are: 1, 2.2, 3.3, 4.7, 5.6, and 6.8 kΩ. 
Figure 5 shows: 
1.  EOL resistor jumpers 
2. Wiring 
points 
Alternatively, you can remove the jumpers and connect a 
discrete resistor directly to the alarm or tamper outputs, as 
specified by third-party equipment. 
Table 1: Connections 
Terminal Label 
Description 
1, 2 
ALARM N/C  Alarm relay, normally closed
 
2, 3 
EOL 
End-of-line resistors 
3, 4 
TAMPER 
N/C 
Tamper relay, normally closed 
5, 6 
ALARM N/O  Alarm relay, normally open
 
7, 8 
+, − 12V DC  12 V
Multibeam alignment and masking 
The multifunction lens fitted to the DDI602U-F1 detector 
produces seven long-range beams and seven medium- to 
short-range curtain PIR beams. The PIR circuitry detects 
changes in heat and movement in the beam pattern; therefore 
items such as trees, shrubs, ponds, boiler flues, and animals 
should be considered when positioning the detector. The 
microwave module detects actual movement towards or away 
from the detector and is programmed to ignore any objects that 
move outside of the preselected detection range. 
Note:
 PIR sensor is more sensitive to a movement across the 
beams, and less sensitive to a movement directly towards or 
away from the beams. Microwave sensor is more sensitive to 
movement towards and away from the sensor. 
The detector module is fitted with two sliding shutters to reduce 
the detection angle of the PIR sensor only. 
The curtains are fitted to the pan and tilt module as shown in 
Figure 6. Each section of the detector lens gives a coverage 
pattern of approximately 10 degrees. 
An additional set of curtain sliders is provided should the beam 
pattern be narrowed even further, e.g. if the minimum detection 
angle of 10 degrees is required. 
When coverage exceeds the desired detection area, adjust the 
module as required and mask off any beams, either vertically 
or horizontally, to avoid unwanted detection. 
Use portions of the self-adhesive silver mask applied to the 
rear, smooth side of the lens as shown in Figures 9 and 10. 
Gently lift the top and bottom edges of the pan and tilt module 
to release the lens. To replace the module, please begin by 
sliding one side of the lens into the clips on the pan and tilt 
module. After one side is secure, do the same for the opposite 
side. Once both sides are secure, gently lift the top and bottom 
edges of the pan and tilt module and press on the lens to click 
it into place. 
Always replace the lens the correct way up to ensure exact 
beam pattern coverage. The top of the lens is marked TOP as 
shown in Figure 7.