Can 12V 3A access control power supply be connected to building intercom and access control at the same time?
DC 12V 3A access control power supply, theoretically can reach 3A in an instant, generally only 1.2A to 1.6A current, and the building intercom system current is not small, and the proposal is that you should install them separately.
According to my personal experience, In DC12V3A access control power supply design, only consider a access control system, the current and the voltage should be considered only a door of electricity consumption, without considering the other external systems, generally not recommend a power supply connect multiple systems or multiple devices.
12V 3A access control power supply of building intercom should not also connect multiple systems. Avoid excessive current burning power supply.