Stanley keychain remote.      Three buttons  capable of operating up to three doors.   This remote does not work with Stanley dipswitch type transmitters.   Comes with coding instructions.   To tune remote to  your Stanley garage door opener, press and release the Remote “R” button, located on the rear of the power unit.   The red LED indicator above the Remote “R” button will light, indicating the power unit is now in the LEARN mode.   Some units will be marked LEARN button instead of “R.”   While the red LED is lit press and hold down on the remote until the Lights on the Stanley power unit blinks two times.   Then test by pressing the remote once more to operate the door.