Cheap ($33 USD), K-type thermocouple (apparently this can be changed in the “secret menu”)
Available from Sure Electronics. Sure sells on eBay too.
The unit I received has two control outputs, SSR (OUT1) and RELAY (OUT2) and is labeled:
Examples of this controller in use:
The available documentation for this controller is poor. By playing with the configuration settings, I have discovered some useful but undocumented features. If anyone knows of more hidden features, please add them here.
Note: These settings apply to the FK02-VM*AN-NN. I haven't tested them on any other CD101 variants.
These settings can be accessed by holding SET and < at the same time for 3s, then setting Cod to 0000. More information is available in the 2nd user manual given above.