If you are comfortable with soldering, you can save money by assembling the unit yourself. You get the PCB-A's with all SMD components pre-mounted, so you only need to solder a few through hole components. Please watch the assembly video's and follow the instructions.

Further more you can opt to 3D print the housings yourself, or you can choose to add them to your order at checkout for 50 euros extra.
This will include the housing for the receiver and for the sender (including the battery holder. the battery cover is casted and is always included for free).

The STL files for printing can be downloaded here.

Make sure that at least the battery holder is printed with flame resistant (PC-FR, UL94 V-0) filament.

Receiver 3d print	Sender 3d print	Battery holder 3d print

Finally, if you need the 13-pin DIN cables, you can also optionally add them to your order at checkout for 25 euros extra. You will get a set of one short cable with standard 13-pin DIN plugs for the receiver and one 1 meter long cable with 13 pin DIN locking plugs for the sender.

Or if you want to make your cables yourself you can buy the 13-pin DIN locking plugs separately for 3.5 euro per plug.