Relay NAND Gate Demonstration Board Stock Type_Stocked sized at 10 inches for

sized at 10 inches for focused respiratory anatomy teaching

For restoring secure access to the UV sanitization chamber after a key is lost

this empty 4mm-terminal holder accepts user-supplied parts where pre-wired modules don't cover the experiment

Adjustment screws (3 x 1 inch) on a metal base position two neodymium magnets

producing distinct audible pitches at varying spin speeds to relate rotational frequency to perceived sound frequency

Relay NAND Gate Demonstration Board Stock Type_Stocked sized at 10 inches forRelay based NAND gate module on a demonstration base, introducing combinational logic behavior by using physical relays so students can hear and see the gate state in real time.