Ecos-RSC2 remote control replaces the remote control, not the original one(with the same function as the original remote control),433.92 Mhz 2 channels. Ecos-RSC2 garage remote control is compatible with your following models: Ecostar RSC2 Ecostar RSE2 Ecostar RSZ1 Code programming with garage door receiver/operator, Only compatible with ecostar (RSC2-433, RSE2-433, RSZ1-433), lifttronic (Liftronic 500, Lifttronic 700, Lifttronic 800) and portronic (Portronic D2500, Portronic D5000, Portronic S4000) Garage door operator Not compatible with Ecostar BS range (RSC4-433-BS, RSZ1-433-BS). Not compatible with Liftronic 700 Series 2, Liftronic 800 Series 2. 2-button handheld, easy programming. STANDARD PROGRAMMING: 1 - Press the transparent programming button located under the ECOSTAR motor for 1 second. The small motor light flashes slowly. 2 - Press the button (A, B, C, or D) on your new remote control for 2 seconds. The light on the motor flashes faster. 3 - Press the same button on your