# Controllers & Accessories

## Controllers & Accessories

### [Rachio 3 & 3e](https://support.rachio.com/en_us/categories/rachio-3-3e-B1cd87TdY)

Last Update: January 11th 2022, 7:07am

### [System Beeping, Buzzing, or Humming](https://support.rachio.com/en_us/system-beeping-buzzing-or-humming-ByOpho8YY)

Summary: Are you hearing a beep, high pitch, or humming sound coming from near your controller and wondering if there is something wrong with your unit? This article...

Last Update: April 13th 2026, 11:44am

Let us know if you have any questions!