The 3N0401LG-013 is an antenna manufactured by HJ Technology, with ROHS certification. It is a small, low profile antenna, designed for use in mobile phones, routers, and other devices requiring a secure connection with a two-way radio frequency communication link. The antenna is designed for various frequencies, allowing it to be used in different applications such as Bluetooth and Wi-Fi networks. It is made to be both durable and weather resistant, and can handle most environmental conditions. Additionally, it is engineered for high efficiency with low levels of interference, making it ideal for a variety of applications.