22-Station Zone Control
Increase the station capacity of the Rain Bird ESP-Me3 Controller capacity up to an optional 22 stations using this 6-station expansion module. (Please note: only compatible with the ESP-Me controller).

Easy Installation
Install this expansion module next to the base unit of your controller in bay 2 with the option to add two more expansion modules into bay 3 and 4 to enable 22-station control.
The module is easily installed in the required bay by simply pushing the module into the slot until secure. Slide the securing lever to the locked position with the option to repeat for additional modules.