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Output Isolation
The control voltage is 120vAC
The output module acts as a messenger for the CPU
The processor is operating on low voltage DC
There must be isolation between real world and CPU
120 V
Output Module
L1
Low Power
CPU
OPTO ISOLATOR
output %Q1
Neutral
How it works:
The opto isolator acts as a physical barrier; the light is only thing that is emitted, not
voltage. It limits voltage spikes and keeps false triggers from occurring.
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