Digi International

Digi International is an American Industrial Internet of Things (IIoT) technology company headquartered in Hopkins, Minnesota. The company was founded in 1985 as DigiBoard and went public as Digi International in 1989. The company initially offered intelligent ISA/PCI boards (the 'DigiBoard') with multiple asynchronous serial interfaces for PCs. Multi-port serial boards are still sold, but the company focuses on embedded and external network (wired and wireless) communications as well as scalable USB products. The company also sells radio modems and embedded modules based on LTE (4G) communications platforms.
Acquisition history.
Digi International has acquired a number of companies since it went public.
Products.
Cellular Routers.
TransPort WR: cellular routers offering secure high-speed wireless connectivity to remote sites for primary or backup wireless broadband network connectivity. 
Digi's multi-functional, enterprise class wireless cellular routers and WiMAX routers with optional Gobi support are designed for enterprise, retail, transportation, financial, remote office and network backup applications.
The product family includes the following cellular routers:
Digi XBee and Long Range Radios.
Digi International manufactures a variety of RF (Radio Frequency) devices, both on the module level as well as long-range ethernet and serial modems. Digi XBee is the brand name for Digi International’s form factor compatible radio modules. The modules consist of a variety of radios that support a number of wireless protocols and are certified for worldwide use.
Digi XBee supports the following protocols: 802.15.4, DigiMesh, ZigBee, ZigBee Smart Energy, and Wi-Fi.
In addition to the Digi XBee line of RF modules, Digi manufactures a variety of 900 MHz modems built for long range communications. In early 2015, the Digi XLR PRO was produced. This 900 MHz has a LOS range over 100 miles. The radio uses patent-pending Punch2 Technology to block out interference from near-by radios and achieve a high quality link over long distances.
Long Range 900 MHz Radios
Embedded Products.
Digi offers module products based on Freescale’s i.MX processors. This includes the Digi ConnectCore 6, which is an ultra-compact system-on-module device based on the Freescale i.MX6 processor family. Its low-profile, surface-mount design maximizes integration flexibility and significantly reduces design risk and is cost-effective.
Non Embedded.
Digi International offers a wide range of products including those designed for industrial (harsh environment) uses. The Digi Connect Family of products offer specific iterations on cellular WAN connectivity for various devices. The Digi ConnectPort Family embellishes this by offering various router features including multiple Ethernet and serial port configurations. These devices are generally configured with a web based interface similar to a standard home networking router.
DigiMesh.
DigiMesh is a proprietary peer-to-peer wireless networking topology developed by Digi International. The protocol allows for time synchronized sleeping nodes/routers and low-power battery powered operation. The protocol is currently supported by several 900 MHz and 2.4 GHz radio modules from Digi International.