Rain Bird ESP-ME3 Irrigation Controller (Controller Only) — 4–22 Stations, WiFi-Ready, Flow Monitoring

The Rain Bird ESP-ME3 is a flexible indoor/outdoor irrigation controller that manages 4 to 22 stations, supports flow monitoring, and upgrades to WiFi control with the LNK module.

This compact controller is engineered for homeowners and light-commercial sites that need a robust, expandable timer with clear controls and advanced monitoring options. The ESP-ME3 ships as the controller only and accepts optional station expansion modules, flow sensors, a Rain Bird LNK WiFi module, and rain sensors to add remote access, weather-based adjustments, and leak/flow alerts.

How does the ESP-ME3 make smart watering easier?

The controller can be turned into a smart irrigation system by adding the Rain Bird LNK WiFi module. Once connected, the LNK provides internet-based weather data and remote programming through the Rain Bird app, helping reduce runtime and adapt schedules automatically.

• Supports LNK WiFi module (sold separately) for remote control and app notifications.
• Uses weather information for daily adjustments to save water.
• Large 3" backlit screen and color-coded dial simplify setup and changes.

Can it protect my property from leaks or broken pipes?

Yes — the ESP-ME3 is compatible with wired flow sensors so you can detect unusual water usage and receive alerts. When used with a flow sensor, the controller will show fault indicators and can notify you through the Rain Bird app when paired with the LNK module.

• Works with multiple sizes and brands of wired flow sensors for high-flow detection.
• Red LED and scrolling messages indicate electrical, programming, or flow issues.
• App alerts (with LNK) let you respond quickly to potential damage or leaks.

What programming flexibility does the ESP-ME3 offer?

The ESP-ME3 provides program-based seasonal adjust, contractor default recall, and station timing from one minute up to six hours, making it suitable for varied landscapes. It also supports bypassing rain sensors per station for zones sheltered under eaves or in greenhouses.

• Seasonal Adjust range: 5% to 200% to scale run times without altering schedules.
• Station timing from 1 minute to 6 hours for long or short cycles.
• Bypass rain sensor per station for areas that need uninterrupted watering.
• Set and restore a contractor default program in two simple steps.

How easy is installation and future expansion?

The ESP-ME3 installs indoors or outdoors using the provided power plug and cabinet, and you can add 3- or 6-station expansion modules without powering down the controller. That lets the same unit serve both small residential lots and larger light-commercial systems as needs grow.

• Configurable from 4 to up to 22 stations with plug-in station modules.
• Add modules without removing or powering off the controller.
• Outdoor-rated cabinet included for flexible mounting locations.

Who is this for: The Rain Bird ESP-ME3 controller is aimed at homeowners, landscapers, and contractors who want a reliable, upgradable irrigation timer with clear controls, strong monitoring capabilities, and room to expand. Choose the ESP-ME3 if you plan to add WiFi remote access, flow detection, or extra stations over time and want a single controller that can handle both residential and light-commercial watering needs.