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  1. 09-30-2017, 03:20 AM #1
    eesakiwi
    eesakiwi is offline Metal Recycling Entrepreneur
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    I have been saving the ones I find. Some security alarm stuff, the odd safety switch and a few 'lid raised' or 'case open' setups.

    I have found that along with this sort of stuff you may find Mercury Switches and another version of switch that uses a contact, a spring and a ball bearing in a similar enclosure, (freezer lids, washing machine lids).

    Some Reed switch's are Gold plated, maybe something under or over it too.
    And some are 'Mercury Wetted', meaning that the contacts are coated with a thin layer of Mercury, so there's a danger aspect to them too. There's a good thread on SMF about it too.
    Normally they have some sort of 'Code' in the model # to indicate it.

  2. 10-25-2017, 01:48 AM #2
    TheCreator
    TheCreator is offline Experienced Scrapper
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    Yes, you are correct some Mercury relays looks similar to the oblong relay in the first picture - but they are clearly marked as containing Hg.
    And all scrappers should already be well versed in looking out for these not only for safety reasons - but they are valuable. mercury relays can be sold - I don't believe they wear out (unless you break the glass ones YIKES).

    You are right, I did scrap and alarm board, one of the unique items I had. And today having a look for something else I noticed a little wire!!!!!
    YES, got the bastard!

    Can you see the little bit of wire that is soldered on - wonder if that is Iridium or such?
    Just checked the other one and it has the same little piece. Not much, but hay if it's Ir
    Last edited by TheCreator; 10-25-2017 at 01:52 AM.

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    eesakiwi
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