The GBF-EV16A is a control PCB with 16 assignable relays, most commonly used as an elevator controller. Multiple GBF SentryLink Door Stations and up to 2 GBF readers can be connected to the GBF-EV16A through RS-485 and/or network connections. Configuration is done through the GBF PMS webpage where the relays are assigned to the ‘Floor’ number in each tenant room and you can define a global activation time for the relays. Tenants can activate their assigned relay through the GBF APP to grant access to the authorized floors programmed in the GBF PMS management system. GBF-EV16A modules can be stacked for applications requiring more than 16 relays.