OK-EL6S/2.0/M/400-50/1/SO116/D cooler

Code / Model:
Manufacturer: HYDAC
Department: Air conditioning and thermal management
Category of products: Thermal management for electronics
Sub-category: Manufacture from materials of any heading
You've seen it before.: 1

Cooler OK-EL6S/2.0/M/400-50/1/SO116/D

This appears to be a product model number or identifier.

Let me know if you'd like me to try and decipher what this code might represent based on common naming conventions for coolers.