Rain Bird has been making irrigation equipment for over 90 years. The ESP4ME 6-Station Module is a straightforward expansion for their modular timer systems. It adds six stations to your existing controller, giving you more control over zones without buying a whole new unit.

The module fits into the slot on compatible Rain Bird timers. It weighs just over two ounces and measures 2 x 5 x 3 inches. Installation takes about thirty seconds. You snap it in, and the timer recognizes it automatically. There’s no wiring or programming headache. This is useful if you’re adding a new garden bed, expanding a lawn, or splitting a zone that wasn’t watering evenly.

A few things to note. This module only works with Rain Bird’s ESP-Me and ESP-TM2 controllers. Double-check your model before buying. It’s also a bare module. You supply the sensor wires and valve connections. For the price, it’s a solid, no-fuss way to scale your irrigation without replacing the brain of your system.