The Rain Bird ESPSM6 6-Station Expansion Module adds six programmable stations to compatible Rain Bird modular controllers. Designed for quick system growth and simple installation, this hot-swappable module lets contractors and homeowners extend irrigation coverage without interrupting controller operation. Adds six additional stations to compatible ESP-Me and ESP-SMTe Series controllers. Hot-swappable design — install or remove the module without powering down the controller. Plug-and-play installation: the module snaps into any available module slot and is automatically detected by the controller. Ideal for residential and light-commercial irrigation systems that require scalable zone coverage and flexible scheduling. Durable construction with labeled terminal connections for easy wiring, testing, and maintenance. Not compatible with older ESP-Modular or ESP-SMT legacy controllers — verify compatibility before purchasing. The package includes the ESPSM6 module and product documentation. Refer to your ESP-Me or ESP-SMTe controller manual and Rain Bird technical documents for complete installation instructions, wiring diagrams, and warranty information. If you need assistance choosing modules or configuring expanded station layouts, consult a qualified irrigation professional.