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/diy/ - Do It Yourself

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>> No.1945867 [View]
File: 123 KB, 670x290, mercury spring thermostat.gif [View same] [iqdb] [saucenao] [google]
1945867

>>1945863
>what's wrong

what's wrong is it uses filthy semiconductors that die on you after a few years. and cheapo relays that freeze-up. meanwhile, i'm using mechanical mercury+spring type units made 60 years ago, and likely will work fine for another 60.

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