Rain Bird ESP-SM3 3-Station Sprinkler System Expansion Module


Rain Bird

The three station module for ESP Controllers easily upgrades a 4station base model to 13 stations with the addition of this 3station hot swappable module at installation or in the future, which can be added without powering down the controller. The unit can be installed in any available slot. Its 5year lithium battery and nonvolatile memory keep dates, times, and program schedules up to date even with interruptions like a power outage. Its surge protection is unbeatable, withstanding nearly 3 times higher electrical surges than competitive controllers. The module is also fusels and uses a state of the art diagnostic circuit breaker to identify a station with valve or wiring problems while continuing to water operable stations.
  • 3 station add-on module or Rain Bird ESP4M
  • Works on either the indoor or outdoor models
  • Module slides into the controller base
  • Hot-swap modules can be installed while the controller is in operation
  • Internal 365 day calendar with leap year feature