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A comment on mmWave radar, you won't see it coming. Parent comment

Re:mmWave radar, you won't see it coming by choonway on Tuesday February 01, 2022 @11:24PM (#30173686)
the only true binary sensor i can think of are good old fashioned mechanical switches.
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Re:mmWave radar, you won't see it coming by samatman on Tuesday February 01, 2022 @11:38PM (#30173766)
Mercury switch on a bimetallic strip (old-school thermostat) counts, same basic principle.
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Re:mmWave radar, you won't see it coming by stingrae on Wednesday February 02, 2022 @01:21AM (#30174438)
reed switch
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Re:mmWave radar, you won't see it coming by relaxing on Wednesday February 02, 2022 @01:47PM (#30182034)
is an old fashioned mechanical switch.
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