The TX4G-JKS-20 with Antennas ROHS electronic part is manufactured by Ebyte. It is a high-performance 4G module that supports both LTE-FDD networks and TDD networks. It has a built-in full GNSS function, supporting accurate positioning for GPS, GLONASS, and BEIDOU satellites. It is compliant with the ROHS (Restriction of Hazardous Substances) directive and is shielded for RF interference protection. It has various software services, including an AT command, NBIoT protocol, and TCP UDP protocol. It also supports features, such as multiple network reselections, multiple channel bonding, network accelerated SMS, and compliant with the latest EU VDE, GCF, and PTCRB regulations.