Compatible with the ATA PTX4 433.92 MHz CRX-1 CRX-2 garage door remote control

General Description Compatible with the ATA PTX4 433.92 MHz garage door remote control, this model is designed to work with various receivers such as CRX-1, CRX-2, as well as several GDO models. This is a replacement remote control for the PTX-4BR, PTX-4BG, and PTX-4PP models. Compatibility and Accessories: Compatible Receivers: CRX-1, CRX-2, GDO-2v5, GDO-2v6, GDO-2v7, GDO-4v3, GDO-4v4, GDO-4v5, GDO-4v6, GDO-6v1, GDO-6v2, GDO-7v1, GDO-8v1, GDO-8v2, GDO-9v1. AM Receivers: SecuraCode CRX-1, CRX-2, Standalone UHF Receiver. Installation: Open the receiver housing, located next to the motor. On the receiver's circuit board, briefly press the programming button (ENR, MEMO, PROG, REC, depending on the model). The receiver's LED will light up or flash. Press and hold the button on the new remote control for 1 Release the button; the receiver's LED will turn off immediately or within 10 seconds depending on the model.