The 390 MHz frequency is commonly used in wireless remote control systems, especially garage door openers, gate operators, keyless entry devices, and alarm systems in North America. Operating within the UHF spectrum, it provides reliable range and strong signal penetration through walls and obstacles, making it suitable for residential and commercial environments. While it offers lower data throughput compared to higher frequencies such as 2.4 GHz, 390 MHz remains a stable, low-power option for simple, secure, and long-range wireless communication needs.