Standard AC/DC power adapters convert household AC power to the DC voltage and current required by devices such as access points, keypads, and security equipment. Power over Ethernet (PoE) injectors add power to an Ethernet connection while passing network data, while smart adapters support configurable triggers, power control, reset functions, or DC pass-through for connected equipment.

Check the adapter’s output voltage, current, wattage, connector type, and polarity against the equipment’s requirements, and confirm that its AC input matches the installation. For networking or AV equipment, also verify support for the required Power over Ethernet (PoE) standard, USB-C Power Delivery, or data connection, as applicable.

Several power adapters include short-circuit and overload protection, with some offering automatic recovery to help support reliable indoor security and surveillance installations. Other models add power or status indicator LEDs, while a PoE adapter includes surge, peak-pulse, and overcurrent protection for connected PoE devices.

Before installation, match the adapter’s output voltage, current, connector, and power delivery type, such as Power over Ethernet (PoE), to the connected device, and confirm that the input voltage and plug style suit the site. For indoor security, surveillance, networking, or smart home systems, provide a suitable grounded outlet when required, follow terminal and polarity markings, maintain clear airflow, and use adapters labeled for indoor operation only in those environments.