John lekas barron's

Ring Doorbells may be connected to low voltage transformers that power home doorbell kits. You can connect Ring in series with a transformer operating between 8V and 24V AC only. Intercom systems and DC transformers are not compatible. If you would like to wire your Ring Doorbell to a compatible low voltage AC transformer without a doorbell kit ...
Can I use this type of wire for wiring light beam sensors on a garage door Asked by: JV Yes, It is low voltage wire and the system for the garage door is low voltage.