While COTS is in general a standard design and a standard feature set, there are things that can be done to provide customisations.
There are three main areas to this:
1. Taking a COTS electrical design and making into a custom form factor, this is useful for customers developing missiles or torpedoes.
2. Taking a COTS product and modifying one or two features of the product to best fit the application.
3. Building standard COTS products into customers systems configurations.
At Unitronix we can look at all of these areas with you. Let us know what you want.