The Digi-Star Cab Control App works exclusively with a Digi-Star ERM-WIFI* module attached to Digi-Star EZ2500, EZ3600, & EZ4600 Scale Indicators. The Indicator requires a J905 Serial port and current software. The Cab Control App and ERM-WIFI system is not compatible with other Digi-Star wireless Cab Control or DataLink systems. The Digi-Star Cab Control App provides both remote display and basic control capabilities. The Cab Control App is easy to view and use and can make the loading and