| Electronics > Beginners |
| Chinese relay module - reliability??? |
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| Tantalum:
Hello Are those cheap relays module available on ebay, reliable, or at least won't put my house in flames if they fail? ;D I only need them to power pumps and fans (2-3A @230V) Are there alternatives available with better components? Thank you |
| jaromir:
The problem is that nobody knows. You may be lucky or perhaps not. Anecdotal success (or lack thereof) expressed by any member here has limited value as long as those suppliers are using parts that were the cheapest that week, often reused ones; with unknown history and uncontrolled factors during hardware harvesting, desoldering and cleaning. |
| Connecteur:
The myth that all Chinese products are inferior is just that, a myth. The factories build to the requested specifications of a product, but they do it cheaper than anyone else. Greedy contractors often specify "cheap as possible, as long as it works," so that's what you get when you shop for the cheapest price. Regardless of the quality level, you are almost always getting spectacular value. |
| kjr18:
I installed one of those in my shed, to control 4 independent mains led lamps. I put in in electrical junction box, with controller and small power supply. I did it around 2016 I think. One day about 4 months ago I went to grab something and noticed that one of lamps is turned on no matter if it's turned on or not. After some digging inside I found that bcb decided to burn right between two tracks :wtf: After some desoldering I made a slot to prevent further board carbonisation. |
| Domagoj T:
I tried using them to switch mains to turn on some 200-ish watt SMPSs, but the contacts would weld together. I suppose the inrush current on SMPS was too much for them. They lasted about a week before I replaced them with something with same declared rating, but physically much bigger (about four times as big). :-// |
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