Conrad Electronic FS20 PIRI-2 Operating Instructions Manual page 12

• The location of the drill holes on the wall or ceiling can be marked through the visible screw
holes in the bracket.
For wall installation (2a) use both holes in the wall bracket.
For ceiling installation (2b) a hole needs to be drilled in the middle of the top of the bracket.
Make sure that the wall or ceiling can support the device at the marked drill hole
locations and avoid all electrical, gas, water and drain lines.
• Drill each 5mm hole at least 35 mm deep and insert 2 appropriately sized dowels.
• Position the wall/ceiling bracket over the drill holes and fasten it in place with the screws.
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