A reed switch is a switch which is activated by magnets and used to control the flow of electricity in a circuit. They are made from two or more ferrous reeds encased within a small glass tube-like envelope, which become magnetised and move together or separate when a magnetic field is moved towards the switch.
Without the correct magnet, a reed switch is redundant. The size and type required depends entirely on the type of reed switch and its position within the device. However, the magnet should always be positioned parallel, rather than perpendicular to the switch. You should always refer to the manufacturer’s specifications to help select the right magnet, but to help, we’ve put together this article all about reed switches. The below high performance magnets have been specifically selected to use with reed switches. If you need any advice selecting the right magnet, call our team on 0845 5194701.