OPTIONAL FEATURES
Battery Back-Up
Using one of the black release keys, unlock and re-
move the cover; then use the following steps to install
the Simplex 125's Battery Back-Up feature.
1.
With the cable facing out from the clock, slide
the battery pack into the space provided.
2.
Pass the battery cable up the channel in the rear
of the unit, and plug the connector onto the bat-
tery pins (the connector is keyed for proper
installation).
3.
Remove the release key and then snap the cover
into place.
OPTIONAL FEATURES
27