Cooper Bussmann - Industrial Products - https://www.eaton.com/

Wireless Input/Output (I/O)
From Left to right -
The Single Sensor Wireless I/O range of products is suitable for connecting to a single sensor. Capable of being powered by battery only supplies.
ELPRO's 915U-2 combines multi I/O and/or gateway functionality with the reliability of secure, scalable, mesh distance communications.
The 315-WH series products provide gateway access between WirelessHart sensor networks, HART Management software (e.g. Emerson AMS) and SCADA/ DCS applications.
Cooper Bussmann
114 Old State Road, Ellisville, MO 63021-5942