What is the NO SPST normally open relay? The NO Normally-Open SPST (Single Pole Single Throw) relay has an opened circuit state when no current is applied to its coil so basically it disconnects the ...

When a mechanical contact, such as pushbutton, switch, user-interface button, limit switch, relay, or contactor contact, is opened or closed, the contact seldom demonstrates a clean transition from ...

A reed switch gets its name from the use of two or three thin metal pieces, called reeds, with plated contacts at their tips and spaced a small distance apart. The reeds are typically encapsulated in ...