Farho NEXNO-IC, Руководство по сборке и эксплуатации

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The NEXHO-IC fire detector can be powered by an external 12-volt power
supply.
For that purpose, unscrew by turning the head anticlockwise with respect to
the detector base.
Place the detector base on the ceiling. Guide the external power supply
cables through the hole of the device designed for this purpose and mark
the location of the fixing screw holes using a pencil.
Remove the detector head momentarily and insert the wall plugs in the
marked locations. Partially insert the screws into the wall plugs using a
screwdriver. Hold the detector head up to the ceiling again and insert the
screws into the holes previously used as a marker. Turn the detector head
until the screws are located over the narrowest part. Drive the screws in to
fix the head to the ceiling.
Cut the wires of the 9-volt battery close to the snap. Respecting the
polarity, join the two terminals of the power supply with the two wires that
were previously connected to the snap.
To close the NEXHO-IC fire detector, align the arrow that is engraved on
the detector head next to the pilot light with the mark engraved on the side
of the base. Turn the head clockwise until the arrow lines up with the two
marks engraved on the base.
The fire detector NEXHO-IC will emit an audible warning signal upon
detection of a fire in the room where it has been placed.
Installation running on external power supply