The S2-106R4-Z1Q6J-Z1Q6Q module is a GSM-based module manufactured by Simcom that is used to provide 2G cellular connectivity and GNSS (global navigation satellite system) tracking capabilities. It has a 77 pad surface mount technology (SMT) design with a size of 17.6x15.7x2.3mm and a data transfer rate of 115200 bps. It is capable of both transmitting and receiving data in a variety of formats and multiple communication protocols such as GSM, GPRS, EDGE, and UMTS. Additionally, it supports features such as SMS messaging, automatic cell searching, and a number of applications. It can be used for a variety of embedded applications including consumer electronics, asset tracking, automotive, and IoT.