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7.2.
LOCK SCREW
The sounder base 4479 is prepared for mechanical locking with detector 4400I.
a) Drill the lock screw hole (2.5-2.7 mm) through the detector.
b) Place the detector in the base with the detector's "Mark" in the same position as the "Mark" on the base and turn the detector
clockwise.
c) Attach the lock screw (1.5 mm Hex key to be used).
Detector
1. Mark
2. Lock screw hole (prepared for drilling through detector body)
3. Corresponding position of the lock screw in the sounder base when the screw is attached.
Sounder base
14
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