compatible use with XC, XC Hybrid, PRO-C and PCC indoor controllers 24VAC power adapter The Rainbird ESP4MIXFM4 is a replacement Transformer for the Rainbird ESP-4-MI Series Controllers. Input 120AC, output 24VAC 1250mA, can replace all devices that need this parameter AC24V.Will work on all 24VAC controllers Note: Kindly verify your equipment before purchasing. This adapter may not be suitable for the newest version of some controllers. Stable Power Output: Delivers steady 24VAC power for your irrigation timer, ensuring reliable automatic watering and avoiding intermittent operation of your sprinkler system. Simple Plug-and-Play Installation: Direct replacement for aged or failed original transformers. Quickly restore normal operation of your outdoor and indoor sprinkler control system. Input 120AC, output 24VAC 1250mA, can replace all devices that need this parameter AC24V.Will work on all 24VAC controllers,compatible Hunter, Toro, etc.