I connected M5 Matter switch, configured in Google Home and found that led lamp it was supposed to control are blinking no matter if it is on or off. Is it broken or it doesn’t support led bulbs?
But it does work with LED light sources! I have two of them and they work perfectly. Are you sure your bulb is functioning properly? What is its wattage? Did you connect it according to the instructions?
yes, there are four GU10 led bulbs and they work perfectly fine with standard switch . I have one neutral, and three live wires. One incoming with current, one heading to another bulbs in the ring (I live in the UK) and one heading to GU10 bulbs. I attached neutral wire to N, live with current and live with no current from another bulbs to L and another live for GU10 with no current to L1.
The wiring description seems correct, although it’s unclear what you did with the grounding and what is “the ring” (peculiar British wiring, I suppose). GU10 LEDs may be incompatible with the relay inside the M5. Some models require switches with zero leakage current or are designed only for traditional mechanical switches. Try testing with a different type of bulb, such as a classic halogen GU10 or another LED model. You could also try using a compensating load, like an LED capacitor (e.g., Sonoff LED Anti-Flicker Capacitor) between L1 and N. Remember to disconnect the power supply - better be safe than sorry!
So the question is if M5 (or any other Sonoff smart switch) is compatible with led lights. I don’t think that Sonoff LED Anti-Flicker Capacitor will make any difference because it is flickering all the time and I can’t turn it on or off. I thought it is flickering during pairing only but it is doing it all the time.
“The ring” is “ring final circuit” or “loop” but I don’t think this is an issue.
It seems you misunderstood my earlier point. I never said Sonoff M5 doesn’t work with LED bulbs, quite the opposite. I have several of them running perfectly fine with various LED bulbs. The only time I’ve seen flickering was with cheap LEDs that tend to have poorly designed drivers or no real drivers at all.
So the sweeping claim that “Sonoff doesn’t work with LEDs” is… let’s say, a bit of a stretch. M5 uses a mechanical relay that cuts power just like a regular switch. If your LEDs flicker with M5 but not with a basic switch, the issue is likely with the specific bulbs or how things are wired and not the switch itself.
Here’s a simple test that doesn’t require any tools or theories: remove all the questionable GU10 LEDs and plug in a classic halogen or a branded LED. If the flickering stops, mystery solved.
And as for the anti-flicker capacitor (like the Sonoff LED Anti-Flicker Capacitor), dismissing it with “I don’t think it’ll help” without trying it is… well, not exactly a reasonable approach. These devices exist for a reason and have been proven to solve exactly this kind of issue in many cases.
Also, just to add. I’ve seen some truly bizarre wiring setups in the UK, especially in older homes. And with all due respect to the often absurdly over-engineered British regulations, some of the things I’ve come across were walking contradictions to those very standards.
If you’re unsure about the wiring, I’d strongly recommend getting an electrician to take a look. Guesswork and mains voltage don’t mix well.
Home is 4 years old. Well “M5 uses a mechanical relay that cuts power just like a regular switch.” Then why bulbs flickering all the time no matter if it is on or off? I will check with regular GU10 bulbs.
Be sure to report the results. Once you’ve pried out the flickering GU10 bulbs, check the markings on their base and tell us who made them.
I found the issue. The problem was with wiring. What I tried was an option without Neutral which M5 doesn’t support. All N wires were bridged and not connected via the switch. When I connected N it worked. However I bought M5 by mistake, what I wanted was ZBM5.
So how on earth did the M5 even start up, and how did it manage to connect to WiFi? Did you connect it yourself, or did you stop at the ‘LEDs are blinking, so I’ll just ask what’s going on’ stage?