Features Key ring remote transmitters are small and convenient with the ability to operate up to three doors or gates from the one unit. A must have for every set of keys in the house. Aftermarket remote control are designed to be an affordable, short term solution for your automation requirements. Compatibility The Steel Line ZT-07 remote control is compatible with Steel Line's newer Sprint 800 / SD800 overhead garage door opener. Coding The Steel-Line ZT-07 garage door remote control can program up to 4 different garage doors (one per button). To program: 1. Press and hold the "P" and "+" buttons on the motor until all the lights on the motor turn on and LED 7 begins to flash. 2. Press the "+" button on the motor once. All LED lights should turn off except LED 7, signifying that the opener is now in Learn mode. 3. Quickly press and release (for at least one second) the desired button on your new remote twice. All LED lights will turn on and LED will begin to continually flash. 4. Press the "P" button on the motor once to save the remote control to the opener. LED 3 will switch on, indicating that the remote control has been successfully programmed to the opener. 5. Repeat the above procedure additional handsets. To delete: 1. Press and hold the "P" and "+" buttons on the motor until all the lights on the motor turn on and LED 7 begins to flash. 2. Press and hold the "-" button until the LED 7 turns off, then begins to flash again. 3. Press the "P" button once. LED 3 will switch on, indicating that all codes have been deleted from the opener.