Question: what is the difference between spdt and dpdt switch?
Answer: 3.An SPDT switch has two positions (ON-ON) while DPDT can have the two (ON-ON) to three positions (ON-OFF-ON). 4. SPDT has three terminals while DPDT has double with six pins or terminals. 5.An SPDT switch has only one circuit mechanism while a DPDT has two or double more than an SPDT.