ESPSM6 Easily expand your Rain Bird ESP-Modular Series Controller from a 4 station base model up to 22 stations with this 6 station hot-swappable module, which can be added without powering down the controller. Modules can be installed in any available slot.

Key Feature:

• Adds six additional stations to Rain Bird residential modular controllers
• Hot-swappable 6-station expansion module can be installed without powering down the controller
• Compatible with Rain Bird ESP-Me and ESP-SMTe series irrigation controllers only
• NOTE: Not compatible with older style ESP-Modular or ESP-SMT series controllers
• Can be installed in any available slot