What is Reed switch?
[[File:Reed Magnetic Switch.png|thumb]] A '''reed switch''' is an electrical [[switch]] that changes its position via [[magnetism]]. It is turned on by bringing a [[magnet]] near to the switch. Once the magnet is pulled away from the switch, the reed switch will go back to its original position. If the magnet is an [[electromagnet]], it is a reed [[relay]]. The reed switch was [[invent]]ed at [[Bell Telephone Laboratories]] in 1936 by W. B. Ellwood. {{Commonscat|Reed switches}} [[Category:Electronic switches]] [[Category:Magnetism]] {{tech-stub}}