The S2-109BH-Z304X is a module manufactured by Simcom that provides support for LTE, SMD, EDGE, GPRS, GSM, LTE CAT1, LTE-FDD, and LTE-TDD protocols. It is designed to be embedded into electronic devices, such as smartphones, tablets, and other connected products to ensure a reliable data-transmission experience. The module is known for its low power consumption, allowing for longer battery life in powered products, as well as its low profile, which allows for greater design flexibility. It also boasts advanced security features, making it a great choice for any application requiring secure data transmission.