Toxicity of Mercury Switch
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Toxicity of Mercury Switch Since mercury is a poisonous heavy metal, devices containing mercury switches must be treated as hazardous waste for disposal. Because it is now RoHS restricted, it has been eliminated in most modern applications. A metal ball and contact wires can directly replace it, yet switch bounce reduction may be necessary. Low-precision thermostats simply use a bimetal strip and a switch contact; precision thermostats use a thermistor or silicon temperature sensor. Low-cost accelerometers replace the mercury tilt switch in precision applications. |
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