Microwave door switch, normally open two terminals. Rated for 16 amps at 125 or 250 vac
Microwave door key (or door latch). The door latch ensures that the microwave door is closed while the microwave is operating. If the door latch is broken, the microwave will not start.
Glass cooking tray
High limit thermostat. Open for continuity at room temperature, closes when it gets hot.