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Detectors are connected to the 850EMT via the Toolbase 
as shown in Figure 8.
Use the marking on the service tool (above ESC button) 
to align the detector. Place the detector in position 1 to 
engage and then twist clockwise to position 2 to lock.
4.4  Connecting to a Detector
Fig. 8: Connecting to a detector
1 – Position 1
2 – Position 2
3 – Marking
2
3
1