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What is the principle of the magnetic switch of the washing machine?
[ Huaqiang Security Network News ] What is the principle of the washing machine door magnetic switch The magnetic switch generally adopts a power-saving design. When the door is closed, it does not transmit radio signals. It only consumes a few microamps, opens the door, and the wireless alarm signal is immediately activated for 1 second, then stops at its own, so it will not start even if the door is already open. This is to prevent the continuous emission of the transmitter from affecting the internal power supply mode and alarm. The wireless magnetic door design also has a low power supply voltage detection circuit. When the power supply voltage is lower than 8 v, the LP led at the bottom will light up, and then the A23 alarm needs to be replaced immediately. A dedicated power supply that would otherwise affect the reliability of the alarm.