Choose a power distribution module when you need to divide one AC or DC input into multiple individually protected outputs, or a relay control module when a control system must switch connected equipment through addressable, normally open or normally closed dry contacts. Choose a lighting power module when the project calls for switching or dimming specific lighting loads, such as incandescent, low-voltage, fluorescent, or neon lighting.

Compare the module’s power input type and voltage, output voltage and current capacity, number of controlled outputs, and protection features, such as fused or resettable overcurrent protection. Check that the module supports the intended load, including access hardware, lighting, or AV equipment, and that its control method, such as dry contact, normally open or normally closed trigger, infrared, Ethernet, or Power over Ethernet, fits the system.

Power control modules connect to access control systems through trigger inputs, relays, and individually protected outputs that distribute power to devices such as electric strikes, magnetic locks, and door holders, while fire alarm panel inputs can trigger emergency egress, disconnect selected outputs, or activate auxiliary functions. For AV, lighting, and networked equipment, modules can accept control commands through dry contacts, infrared, Ethernet, Power over Ethernet (PoE), or wired and wireless network connections to switch, dim, schedule, or remotely reboot connected devices.

When selecting power control modules, match the module to the load type, voltage, current, number of controlled outputs, and control method, such as dry contacts, access control triggers, infrared, Ethernet, Wi-Fi, or a lighting control system. Plan for the installation environment, available enclosure space, wiring and power sources, battery or fire alarm interfaces where applicable, and network access for remote monitoring or control.