I'm making a device - a keyboard - that uses a pre-certified RF module. I host this device on my custom PCB, and have programmed it to receive the keystrokes (from switches on the host PCB) and transmit them to another, identical RF module on top of an Arduino - which interfaces with the computer.
With the exception of the module (and, I suppose, the Arduino which already ought to be certified as well), nothing else in my device exceeds 1.7Mhz, which - as I understand - is the cutoff for devices to be verified. This comes from the exemption list, which states:
"Digital devices in which both the highest frequency generated and the highest frequency used are less than 1.705 MHz and which do not operate from the AC power lines or contain provisions for operation while connected to the AC power lines."
It's battery powered (the receiver is USB-powered). Do I need unintentional transmission testing? Do I need certification? I'm just lost.