SC Burglar Alarm Practice Questions - South Carolina Burglar Alarm Contractor Examination Exam

A typical plug-in transformer for a 12-volt burglar-alarm control is which kind of device?

A 120/240-volt autotransformer feeding the siren directly A 480-volt control-power transformer A listed Class 2 transformer, often 16.5 VAC, that supplies the panel rectifier and battery charger A current transformer around the service entrance

Correct Answer:

A listed Class 2 transformer, often 16.5 VAC, that supplies the panel rectifier and battery charger

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