The Ecos-RSC2 remote control is a replacement remote control, not the original (with the same functions as the original remote control), 433.92 MHz, 2 channels. The Ecos-RSC2 garage door remote control is compatible with the following models: Ecostar RSC2, Ecostar RSE2, Ecostar RSZ1. Code programming with garage door receiver/operator. Only compatible with garage door openers in the Ecostar (RSC2-433, RSE2-433, RSZ1-433), Lifttronic (Liftronic 500, Lifttronic 700, Lifttronic 800) and Portronic (Portronic D2500, Portronic D5000, Portronic S4000) series. Not compatible with Ecostar BS series (RSC4-433-BS, RSZ1-433-BS). Not compatible with Liftronic 700 Series 2 and Liftronic 800 Series 2. 2-button remote control, easy programming. STANDARD PROGRAMMING: 1 - Press the transparent programming button located under the ECOSTAR motor for 1 second. The small indicator light on the motor will flash slowly. 2 - Press the button (A, B, C or D) on your new remote control for 2 seconds. The motor's indicator light will flash faster. 3 - Press the same button on your new remote control for 2 seconds. The motor's indicator light will flash very quickly and then turn off. Your new remote control is now programmed.