Frequency of 433.92MHz, ensuring compatibility with various receivers and remotes purchased outside of the USA. Utilizes a rolling code system for enhanced security and reduced risk of 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 targeted use. Professional installation is recommended for optimal performance and proper setup. 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 system for added security, making it a reliable choice for users. The programming process can vary based on the receiver or control unit, allowing for customization. Please note that it is not compatible with certain remote models; verify compatibility before purchase. For best results, professional installation is advised. Color: Black. Material: ABS. Package Contents: 5 x Door Remote Control. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3cm.