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7.2 Voltage Input (Active High or Active Low)
This diagram shows how to wire the 5128/29 for voltage input. The input must be from a compatible UL listed
control panel.
Active High
A short across the EOL or an open loop causes a trouble condition. Pulling the input high (10 to 30 VDC)
causes an active channel (zone). (At the time of this manual’s printing, the Cerberus Pyrotronics System 3 with
CSI-35 is the only UL Listed model available.)
Active Low
A short across the EOL or pulling the input low causes an active channel (zone). An open loop causes a trouble
condition. (This information is provided for the future. At the time this manual was printed, no compatible UL
listed control panel with an active low input is available.)
Figure 7.2-A: Active High or Active Low Voltage Input
