The S2-1050J-Z0K4J is a multi-mode Gigabit System Module manufactured by Simcom. The module features a GSM, 3G, and EDGE, GPRS, GSM, WCDMA. It has a standard 30x30x2.9mm SMD package, with a wide range of connection ports and interfaces, making it suitable for a variety of applications. It is also highly configurable and suitable for multiple types of systems. It has several advantages such as low power consumption, reliability and flexibility. Additionally, the module is capable of supporting multiple bands and provides compatibility with a variety of standards.