Temperature Module (Air and Water)

This is another part of my project "water cooling" for my Delta printer.

The idea of that module is to collect the displays and a standard switch within one enclosure. The displays have PTCs and i use them for measuring air and water temperature. A modified shut off valve (4mm tubes) is used to hold the PTC sensor for water temperature.
To let the device be more energy friendly i install a switch that i can use it on demand within operation of the printers water cooling system. All parts are