DIN-Rail mount for a single unit (18mm width).

Three alternatives exist:

• a0: Stand without screw holes
• a1: Screw holes at the back, reachable when the module is mounted
• a2: Screw holes at the back and front, front screw is only reachable when the module is not nounted.

The screw holes are 6mm wide for the head and 3mm wide for the thread.
I use 2.9x9.5mm DIN7981 self-tapping pan head screws.
 

The module used in the pictures is the Modbus Cloud Connect.