The KH1NB(4G)C3600-03-A/3 is an electronic part manufactured by Kinghelm. It is designed for 4G cellular applications, with an enhanced frequency range of 700-2700MHz and an antenna gain range of 0-3dBi. It is compliant with RoHS requirements and comes with three antennas with gold plated contacts for maximum signal balance and coverage. The product is suitable for use in a variety of applications, including mobile phones, Wi-Fi hotspots, base stations, and IoT devices. The product is heat-resistant, radiation-resistant, anti-jamming, low insertion loss, and comes with MIMO technology for enhanced signal quality.