Rain Bird LNK2 WiFi module for irrigation controllers

Add Wi-Fi to your Rain Bird irrigation controller

The Rain Bird LNK2 WiFi module adds wireless connectivity to compatible Rain Bird irrigation controllers. Instead of managing your controller exclusively from its front panel, the LNK2 enables convenient smartphone access and remote management of your automatic irrigation system.

The module is particularly useful if you already own a compatible LNK Ready Rain Bird controller or want to add smart connectivity at a later date. The LNK2 plugs directly into the dedicated accessory port, so the complete irrigation controller does not need to be replaced.

Once configured, the controller can communicate through your Wi-Fi network and supported Rain Bird online services, allowing compatible functions to be accessed remotely when an internet connection is available.

Simple installation without additional wiring

Installing the LNK2 is straightforward. The compact module plugs directly into the dedicated accessory port of a compatible controller and receives its power from the controller. No separate power supply or additional wiring is required.

A compatible controller can usually be identified by the LNK Ready or Wi-Fi symbol on its front panel. After inserting the module, network setup is completed through the Rain Bird app.

You will need your Wi-Fi network name and password during setup. The LNK2 requires a 2.4 GHz Wi-Fi network and is not compatible with a 5 GHz-only network.

Compatible with several Rain Bird controllers

The LNK2 is designed as a Wi-Fi upgrade for several Rain Bird irrigation controller families. For residential irrigation systems, it is particularly useful with ESP-TM2 and ESP-ME3 controllers.

Rain Bird also identifies compatible ESP-RZXe and qualifying ESP-ME controllers, while LNK2 support is available for selected professional controller families including LXME2 and LXIVM.

For older controllers, compatibility should always be checked before purchase. Look for the LNK Ready or Wi-Fi symbol and verify the exact controller model and production generation.

Rain Bird 2.0 app support

The LNK2 enables compatible controllers to work with Rain Bird's current app platform. Controllers such as ESP-TM2 and ESP-ME3 are supported by the Rain Bird 2.0 ecosystem, although exact app compatibility depends on the controller model and generation.

Through the app you can manage irrigation schedules, manually operate individual zones and change controller settings. Multiple compatible controllers and sites can also be managed from a mobile device.

Older Rain Bird controllers may have different app compatibility. LNK2 hardware compatibility therefore does not automatically mean that every older controller supports every feature of the latest Rain Bird 2.0 app.

Control irrigation remotely

One of the main advantages of Wi-Fi connectivity is remote access through the internet. When a compatible controller is connected through the LNK2, supported irrigation functions can be accessed without being physically next to the controller.

You can check schedules, change watering settings or manually operate irrigation zones from your smartphone. This is particularly convenient while travelling or when managing an irrigation system at another property.

Weather-based irrigation adjustments

Internet connectivity allows supported Rain Bird controllers to use weather information for automatic irrigation adjustments. Available features depend on the connected controller and app support.

This can help adapt irrigation to changing conditions and improve water efficiency without requiring every watering duration to be adjusted manually.

2.4 GHz Wi-Fi required

The Rain Bird LNK2 operates exclusively on the 2.4 GHz Wi-Fi band. A 5 GHz-only wireless network is not supported. Many modern routers provide both frequencies simultaneously, so this is usually straightforward in a typical home network.

Before installation, make sure that a sufficiently strong Wi-Fi signal is available at the controller location. Garages, basements and utility rooms with thick walls can reduce wireless signal strength.

The LNK2 uses encrypted wireless communication to help protect the connection between the irrigation system and Rain Bird services.

Irrigation continues without internet access

The LNK2 does not replace the irrigation controller itself. Watering schedules remain stored in the connected controller, while the LNK2 primarily provides network and app connectivity.

If Wi-Fi or internet access is temporarily unavailable, locally stored irrigation schedules continue to operate. Remote access and internet-dependent functions will be unavailable until the connection is restored.

A practical smart upgrade

The LNK2 is particularly useful when you want to start with a conventional Rain Bird controller and add smartphone connectivity later. An ESP-TM2, for example, can initially be programmed directly at the controller and upgraded with the LNK2 whenever Wi-Fi control is required.

This makes compatible Rain Bird controllers flexible and allows smart irrigation functions to be added without replacing the complete controller.

Technical data and specifications

• Manufacturer: Rain Bird
• Product: LNK2 WiFi module
• Model: LNK2WIFI
• Product type: Wi-Fi upgrade module for irrigation controllers
• Wi-Fi: Yes
• Wi-Fi frequency: 2.4 GHz
• 5 GHz Wi-Fi: Not compatible
• Internet remote access: Yes, with a compatible controller
• Mobile app control: Yes
• Rain Bird 2.0 app: Depends on connected controller compatibility
• Compatible with ESP-TM2: Yes
• Compatible with ESP-ME3: Yes
• Compatible with ESP-RZXe: Yes, compatible LNK Ready models
• Compatible with ESP-ME: Yes, qualifying compatible models
• Additional compatible series: Selected LXME2 and LXIVM models
• Installation: Directly into controller accessory port
• Separate power supply required: No
• Electrical supply: 24 VAC from compatible controller
• Maximum current: 55 mA
• Encrypted wireless communication: Yes
• Operating temperature: -10 to 65°C
• Storage temperature: -40 to 66°C
• Maximum operating humidity: 95% at 10 to 49°C, non-condensing
• Width: Approx. 2.87 cm
• Height: Approx. 4.65 cm
• Depth: Approx. 1.22 cm
• EU certification: CE

Frequently asked questions about the Rain Bird LNK2 WiFi module

What does the Rain Bird LNK2 WiFi module do?

The LNK2 adds Wi-Fi connectivity to a compatible Rain Bird irrigation controller, enabling supported irrigation functions to be managed from a smartphone and remotely over the internet.

Is the LNK2 compatible with the Rain Bird ESP-TM2?

Yes. The ESP-TM2 is officially listed as an LNK2-compatible Rain Bird controller.

Is the LNK2 compatible with the ESP-ME3?

Yes. The Rain Bird ESP-ME3 can be upgraded with the LNK2 for Wi-Fi and mobile app connectivity.

Does the LNK2 work with the Rain Bird 2.0 app?

Yes, when used with currently supported controllers such as compatible ESP-TM2 and ESP-ME3 models. Exact Rain Bird 2.0 app support depends on the connected controller model and generation.

Can I control irrigation while away from home?

Yes. When the LNK2 is connected to Wi-Fi with internet access, supported controller functions can be managed remotely through the app.

Does the LNK2 require 2.4 GHz Wi-Fi?

Yes. The LNK2 operates on the 2.4 GHz Wi-Fi band and is not compatible with a 5 GHz-only network.

Does the LNK2 need a separate power supply?

No. The module plugs directly into the dedicated accessory port and receives power from the compatible irrigation controller.

Will my existing watering programs be retained?

Yes. Existing irrigation schedules remain stored in the controller. Installing the LNK2 adds connectivity without requiring the controller itself to be replaced.

What happens if Wi-Fi fails?

Locally stored irrigation schedules continue to run. Remote access and internet-dependent functions are temporarily unavailable until the network connection is restored.

Can I install the LNK2 myself?

Yes. With a compatible controller, the module simply plugs into the dedicated accessory port. Network configuration is then completed through the Rain Bird app.

How can I check whether my controller is compatible?

Look for the LNK Ready or Wi-Fi symbol on the front panel and verify the exact controller model. Older controllers may also require checking their production date.

Is LNK2 the same as the older LNK WiFi module?

No. LNK2 is the newer generation. App compatibility can differ between LNK2 and older LNK hardware, particularly when using the newer Rain Bird 2.0 app.