As long as your software version is 3.80 or higher, you can add the CONNECT WiFi module to your device to add the app control. All 3.5 series models (indicated by a white actuator box on top of the valve/Systems sold since 2014) are compatible. To confirm the software version, go to your System control panel and press and hold the UP arrow until the display goes blank. The panel will restart and display the following sequence: FLOLOGIC; C.VER 3.XX; V.VER 3.XX; SYSCHK; HOME. The two-digit C.VER and V.VER numbers reflect your software version. If you miss the C.VER or V.VER numbers, you can repeat the process.