In addition to reed relays and sensors, reed switches (reed switches) are widely used in circuit control, especially in the communications field. Reed switch magnet drive commonly used mechanical system, proximity sensor. Examples are door and window sensors in burglar alarm systems and tamper-proof methods.
The laptop uses a reed switch to put the laptop's sleep mode when the lid is closed. The speed sensor of the bicycle wheel and the car gear uses a reed switch to simply drive the magnet on each wheel through the sensor. Previously used for reed switches in computer terminals, where each key has a magnet, the keypad of a reed switch actuated by pressing a key; a cheaper switch is being used. Electric and electronic pedal keyboards are used by organ players, who often use reed switches to contact the glass enclosure to protect it from dirt, dust, and other particles. They may also be used to control diving equipment such as flashlights or cameras, which must be sealed to maintain pressurized water.
Reed switches can also be used for computer cooling fans and disk drives. Due to the availability of cheap Hall-effect sensors, they replace reed switches and give longer life.