Controllers
The controllers are in fact the door operators. They can already be equipped with a reader or a reader can be connected to it. In almost all cases they can be expanded with multiple readers (rs485 or wiegand). So one ALWAYS needs a controller.
The controllers are therefore provided with input, output relays, communication protocols for readers, RS485, power supply and possibly network connection.
The controllers are therefore provided with input, output relays, communication protocols for readers, RS485, power supply and possibly network connection.