Rain Bird ESP4ME3 – Smart Indoor/Outdoor Irrigation Controller

Take full control of your irrigation system with the Rain Bird ESP4ME3. Starting at 4 stations and expandable up to 22, this versatile controller is built for both residential and light commercial use — indoors or out. With WiFi compatibility, flow monitoring, and a large backlit display, it's one of the most capable controllers in its class.

Key Features

• 4 to 22 station capacity – start with 4 stations and expand using hot-swappable 3- or 6-station modules (sold separately)
• WiFi ready – compatible with the Rain Bird LNK WiFi module (sold separately) for remote access and monitoring from any mobile device
• Flow monitoring – connect a wired flow sensor (sold separately) to detect leaks, broken pipes, and water waste in real time
• Indoor/outdoor rated – includes power plug and outdoor cabinet for flexible installation locations
• Large 3" backlit display – easy to read and program in any lighting condition
• 4 programs, 6 start times each – precise scheduling flexibility for complex irrigation layouts
• Seasonal adjustment – one-touch watering adjustment from 5% to 200% to match seasonal conditions
• Rain sensor ready – add a rain sensor (sold separately) to automatically skip watering cycles
• Delay watering up to 14 days – ideal for vacations or post-rain periods
• Non-volatile memory – 100-year storage retains programming without a battery
• 10-year lithium battery – preserves time and date settings during power outages
• Master valve/pump start circuit – supports advanced system configurations

The ESP4ME3 is the smart choice for homeowners and contractors who want a reliable, expandable, and WiFi-ready irrigation controller built to last.