If you want to build a latching relay, you will need to have some knowledge of electricity and circuits. Some people get a basic understanding of such principles in a beginners physics class, but that is rarely enough to build a circuit system yourself. Typical relay systems use power consistently while a latching relay only uses power at the instant it is turned on. To build a latching relay
. you will need to have two relaxed states in place. When the circuit is turned off, it will remain in the last state it was in.
