Eurotech's ReliaGATE 50-21 Development Kits deliver an easy way to get started in M2M communications. The ReliaGATE 50-21 is a multi-service gateway and edge controller. It provides a flexible communication architecture that includes 2G/3G cellular, Wi-Fi, 802.15.4/Zigbee and GPS interfaces. It offers connectivity to a wide range of sensors and edge devices and makes it easy to deliver the data to the business applications. The ReliaGATE 50-21 also includes interfaces for wired connectivity such as Dual Gigabit Ethernet, up to four serial ports, Dual CAN interfaces and isolated analog and digital I/O. The ReliaGATE 50-21 is compatible with Eurotech Everyware™ Device Cloud (EDC), the end-to-end solution to bring data from the field into the business applications, through a flexible and scalable infrastructure and a number of cloud- based services. The ReliaGATE 50-21 can be programmed with the Everyware™ Software Framework (ESF), a portable, high level set of APIs and plug-ins that greatly simplify and speed up the development; for instance, ESF provides the MQTT plug-in, a highly efficient and robust M2M transmission protocol.