Preferred diagram program

I am looking to do a write up on a project using a 4-Channel General Purpose SPDT Relay Shield + 4 GPIO with IoT Interface. I don’t mind paying for Fritzing but I wasn’t sure if it had that shield in it. Is there a preferred tool people use that has NCD shields in it? As I have a couple of their I2C boards as well so it would be easier to start there.

Thanks

Hi Paul,.
we have a wiring diagram which can be found on product page under wiring section.

Thanks