Universal Compatibility: This remote control operates on a 433.92 MHz frequency with a secure rolling code technology, ensuring it works seamlessly with numerous gate and garage engines. It is specifically designed to replace ON1E, ON2E, ON4E, and similar 2 or 4K models, but it is not suitable for systems using fixed codes or different frequencies. Enhanced Security Features: Each of the button generates a code, enhancing the security of your property by preventing unauthorized copying of the signal. This rolling code mechanism is crucial for protecting residential or commercial premises from unauthorized entries, offering peace of mind. Dual Channel Functionality: Manage up to two devices simultaneously with this versatile remote. Whether it's your garage door, a motorized gate, or a barrier, the remote ensures efficient control with a substantial range of up to 200 meters in open spaces, making it highly practical for daily use. -Learning Setup: Easily pair this remote with your devices using the quick 'learn' function on your compatible receiver. The process is straightforward, requiring no special tools or extensive technical knowledge, which makes it accessible for all users. Compact and Robust Design: Designed for durability and convenience, this remote features a sleek, shockproof black casing that easily attaches to a keychain. Its , keychain-size build ensures that it is always within reach and ready to use, combining style with functionality. Color: As Shown Material: plastic Package Contents: 3*remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.