Hi V-F,
NI sells many different types of devices and it is not easy to decide what is best without more information.
My suggestion would be to contact a technical sales representative at your local NI office and explain what you are trying to accomplish. They will then suggest the best devices for your application and try to take all aspects of what you are doing in consideration.
(There is a link at the bottom of the ni.com page to contact your local representative)
As far as I am concerned, you're probably looking for a 1-slot cDAQ with an appropriate digital module.
Regards,
Joseph Tagg
