Simple Hall Effect Latching ON/OFF Relay Switch Circuit

Handy circuit for switching ON or OFF any 120V or DC powered device or circuit. To trigger the relay ON, you simply bring one pole of a magnet within close proximity of the hall effect sensor. To turn off the relay, you reverse the pole of the magnet(N & S). The hall effect sensor can be hidden behind a wall or inside furniture so only you know how and where the relay can be triggered. You can use a neodymium magnet on your keyring, or a neodymium ring on your finger.

Circuit here:

http://tinypic.com/m/k0oy0k/4

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