6PCS NE555 DC 5V Delay Timer Relay Switch Module Adjustable 0-10 Seconds Constant Current Regulator Timer Delay Converter for Automotive Control System Electrical Equipment

Make sure you save the diagram shown in the listing so you know how to wire them up. Hey didn’t I’m with any diagrams but I was able to reference the listing. They work well. My only gripe is the lack of documentation with them.

I usually have to throw away one defect from each batch. Other than that, they work perfectly for my needs. You can change out the capacitor for a longer timer. I need at least 40 seconds and stock never gets me more than about 15 seconds.

I tested this on my bench power supply. I applied 12 volts, saw the relay kick on after about 7 seconds followed by the led blowing and the relay no longer working. Comparing this to the similar 5v models I have and they appear identical. They were drawing .2 amps at 12v with the led being very bright. Do not buy.

No funciinan 555 malos

good product only problem is there was no wiring diogram

They function exactly as the listing describes. Easy to wire, easy to use. However, only two out of the six that came in the package actually worked, the other four were complete non-functioning duds. Even still, not a bad price just for the two that worked.

All six ended up being defective. Some didn’t work at all and some worked a couple of times and then just quit. Must be rejects that failed testing.

5 volt