GMAX brand four-channel wireless remote control transmitter, model GM-R039. This ergonomic and compact device operates on a 12V battery and utilizes a standard 433.92 MHz radio frequency. It is designed for the remote operation of barrier gates, automatic garage doors, electric locks, and various wireless relay receivers integrated into access control systems. Equipped with four independent buttons, it enables users to seamlessly control up to four different devices, mechanisms, or channels using a single remote.
