RB ESP-ME Modular Indoor/Outdoor LNK WiFi Smart Controller 4 Station

4 station base capability, expandable up to 22 stations using hot-swappable 3- or 6-station expansion modules (sold separately)
Comes with power plug and outdoor cabinet for indoor or outdoor installation.
WiFi Connectivity -- compatible with the new Rain Bird LNK WiFi module (sold separately). Simply plug in the module to access, operate and monitor your irrigation system from any mobile device.
Flow monitoring. Use with wired flow sensor (sold separately) to monitor flows, get notifications and prevent water waste from broken pipes and leaks.
Easy to read, large backlit 3" screen
4 individual programs with 6 independent start times per program
One-Touch manual watering
Add a rain sensor (sold separately) to automatically prevent watering when it rains.
Non-volatile (100 year) storage memory saves current programming, no battery required
10 year life lithium battery saves controller time and date during power outages
Delay watering up to 14 days
Water-saving, one-touch seasonal adjustment from 5% to 200%
Master valve/pump start circuit