The ELK M1 System will support up to 144 Wireless Zones from zones 17 – 160 and it is possible to have 144 6010 4 Button Fobs enrolled. In ElkRP2 under Wireless Setup ((on left below Zone (Inputs) in the list of items)) click the tab KEY FOB EVENTS and you can select which event the buttons will respond to OR leave the Event Disabled and create rules based upon each button.