Okay, let me break down these KSD201 thermostats for you - they're like having a tiny firefighter inside your appliances! This 2-pack gives you a spare for future repairs, which is always smart. These are normally closed thermostats that automatically cut power when things get too hot (specifically at 70°C or 158°F), then reset themselves once everything cools down - no manual reset needed. They're compatible with a bunch of GE appliances including water heaters, microwave ovens, and furnaces. The installation is pretty much plug-and-play with 3/16 inch male terminal spades, but remember to always unplug your appliance before starting any work. At room temperature, you should have continuity (that's normal!), and they'll open the circuit when overheating occurs. Made with heat-resistant materials and precision components, these are built to last and priced to save you money compared to OEM parts. Just double-check your appliance's serial tag or manual to confirm compatibility before ordering. Whether you're fixing a microwave that won't heat or a water heater that's acting up, these universal thermostats are reliable replacements that get the job done without breaking the bank.