... a.support for up to 32 zones 32-CHANNEL ALARM MATRIX The DCI-19A connects between a facility's fire alarm ... are divided into two groups.The rear panel ADDRESS code switch is used to set the adjacent zone number. For example ... : Adjacent Zones Range 0,+/- 1, +/- 2, +/- 3, +/- 4 Controls Power switch, address setting dip,and adjacent zone selector, Indicators POWER indicator ...