Question edited for a lot more clarity. FULL make model (what it is)'.
Featuring a large 8-ounce kettle with a built-in stirring system, this unit pops up to 32 cups of delicious popcorn every time. Tempered glass windows and door.
https://mans.io/item/nostalgia/ccp310
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N20FR - Used to measure the moisture level in sawn timber (also cardboard, paper) 6 to 44% on the left hand scale and hardened materials (plaster, concrete and mortar) 0.2 to 2.0% on the right hand scale
Question edited for a lot more clarity, full 'make model what it is)'.
No wiring diagram on line, just operating manual and parts list. Contact Waring Support direct.