Compatibility-Works for 1993-current Garage door openers with , Red/Orange, Yellow, Green smart/learn button on the powerhead.[Attention:Not support dip switch garage door openers remote!] 4-button garage door opener remote keychain supports up to 4 different openers.This eliminates the hassle of carrying multiple Universal Keychain garage opener opener remotes. Slide-lock protective cover avoid you from accidentally pressing the buttons. Compact and , with metal reinforced key chain hole which 't be broken for pressure, key chain included for each Universal garage door opener remote keychain,Built-in LED transmitting & low battery indicator. Pack for Added Convenience - To further enhance your convenience and peace of mind, each pack includes three garage door opener remotes. Whether you misplace one or want to share access with family members, having an extra remote ensures uninterrupted access. Keep one 's convenience, and take one with you for on-the-go control. Please note: the