Frequency of 433.92MHz ensures compatibility with various receivers and remotes purchased outside of the USA.Utilizes a rolling code system for enhanced security and protection against unauthorized access.Programming flexibility allows for memorization in different ways, depending on the receiver or control unit options.Not compatible with specific remote controls like FLO1R-S/A, FLO2R-S/A, FLO4R-S/A, ensuring clarity in usage.Professional installation is recommended to proper functionality and integration with existing systems.This transmitter operates at a frequency of 433.92MHz and is designed to work exclusively with receivers and remotes purchased outside of the USA. It features a rolling code for added security, making it a reliable choice for users seeking to enhance their access control systems. The programming process varies based on the receiver or control unit, allowing for customization to fit specific needs. Please compatibility with your existing equipment before purchase, as it does not work with certain models. Professional installation is advised for optimal performance.Color: BlackMaterial: ABSPackage Contents:5* FL04RE Garage Gate Opener RemoteOnly 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.