The AH1801-WG-7 is a micropower, ultra-sensitive Hall Effect Switch with two hall effect plates and a output driver. Either north or south pole of sufficient strength will turn the output off. The output will be turned on under no magnetic field. While the magnetic flux density (B) is larger than operate point (Bop), the output will be turned off, the output is held until B is lower than release point (Brp), then turned on.
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