Hey everyone. I'm looking to build a custom solution for my Adder KVM. It currently supports switching via RS232 and I'd like to take advantage of this since I plan on hiding the KVM. Adder makes a OEM switch for this KVM but they are asking $240 for something that shouldn't cost more than $50-75 to build.

Do you guys know of any cheap IR to RS232 solutions I could build out? RF to RS232 would work as well.

I'm not afraid of soldering but would like to obtain a kit if possible.

Here is the link to the KVM for reference.
[Link: adder.com]

Link to Adder Remote for this KVM.
[Link: adder.com]

Appreciate the help in advance fellows.