The UGSM219-EG91E#SMA with Expansion Board, USB, UART, LTE Cat 1, IoT, SIM, and USB B mini is a cellular modem manufactured by R&D Software Solutions. This modem is designed to enable cellular connectivity on networks with LTE Cat 1. It is a comprehensive IoT connectivity solution featuring an expansion board with USB, UART, and a USB B mini port. The antenna is wired SMA and the device has an ultra-low power sleep mode for applications that require extended battery life. An on-board SIM card slot is also included. Connect up to two external antennas for LTE signal gain. This modem also includes radio support for SMS, Data, Audio, and TCP/IP. The modem is also RoHS compliant and can be used in a variety of IoT applications.