Gently used DS1000 from Tibbo.  4 serial ports, 1 ethernet port, wiring cover, includes all shown in photos
From the web:

Brief description

Featuring four RS232 ports, the new DS1000 is the first member of Tibbo's new DS10xx family of BASIC-programmable Industrial Controllers. 

The DS1000 is a winning combination of substance and style. Rugged yet streamlined, its IP68-certified* housing combines mechanical strength with an elegant appearance that will set the DS1000 apart from other devices on your DIN rail. 

As for what the DS1000 actually does -- this is all up to you. Its functionality is wholly determined by whatever Tibbo BASIC application it is running. Tibbo BASIC allows you to create rich web-enabled applications supporting browser-based configuration, direct TCP and UDP communications, email, data storage, etc. Thus, the DS1000 is perfectly suited to work as an intelligent serial controller, serial device server, or serial communications gateway.