I recently discovered that all the Cync (C by GE) switches I’ve been installing don’t have any way to integrate with Home Assistant (please correct me if this is wrong). I kept hearing “Home Assistant integrates with everything”, so I wasn’t really worried about which hardware I was installing. But now I’m trying to get away from Google, and have all these devices that I can’t do anything with. I’m looking for replacements, and Shelly relays look promising.
I have a ton of questions, and it’s taking way too long to get all the answers through Google and reading through all these forums, so I’m hoping that someone with some experience with these finds this and can help me out.
Can these devices talk to each other? Like if my Home Assistant is down, can you still get basic functionality like a 3-way switch without a traveler wire? If so, what do I need to know about protocols and configuration and all that? e.g. MQTT?
Is there something equivalent to Cync’s wireless switch (CYNC Wire-Free Smart Switches), where I can adhere it to a wall or install it in a switch box and have it control a light? Ideally this would work without a hub or requiring home assistant to be reachable.
How does the power monitoring work? Can I use this in outlets to get per-outlet consumption statistics?
How does the Shelly Dimmer 2 work? Like is there a way to set it up so that dimming can be controlled both by automation and by physical interactions?
Each unit connected to a physical switch, once set up each have it own IP on your home network. You can log on to its web ui and control it on or off. In there you can set how the physical switch behave (edge switch, toggle switch, detach switch). At this point they are locally control and each switch are separate unit. If you register an account and and register them in their app and now it cloud base and they can communicate with each other eg you can switch the bedroom switch to turn on the kitchen light. When integrate in HA it just an entity call switch.shellyxxxxx that all dont need HA to operate can use physical switch, web ui or cloud app
Normal shelly switch dont have power monitor Shelly have 2 type of power monitor unit, Shelly 1PM which is a shelly switch with power monitor the load that it control, ShellyEM which measures power by clamp usually goes in the power box to measure macro usage rather then individual appliance.
work similar as 1 but with 2 momentary switch
Note: They need a neutral wire, there are “no neutral”verion but need a by pass resistor (i found these unreliable coz sometimes it loose power)
Hope all that make sense as it very late here and i cant see what i am typing
Got some Shellies myself recently and got a few details to fill in:
The Shelly 1L can single-highhandedly handle a 3-way switch with the correct adjustment of wiring in the switch boxes (effectively converting each switch from a SPDT to SPST, thanks Dimitar on the Shelly facebook support group). A single Shelly 2.5 may also work. In other cases, the switches need to be converted to momentary (push button), or you need a Shelly in each box. When there are two Shellies, one can trigger the other through REST, as long as both are connected to wifi, and they have static IPs. Additionally, with the Shelly Plus series, they can act as both a wifi client and wifi AP simultaneously, so you don’t even need a wifi router, one can just connect directly to the other.
Still not sure about this one. There is a Shelly Button, but it can have a slower response time than I’m looking for. I may have to look into adding a Zigbee or Z-wave device and get it to trigger lights. Unfortunately, this would require additional infrastructure to be running, like an mqtt server or zigbee bridge or something. Please send any info or links that might be relevant
Answered by @huu above. Shelly 1PM, Shelly Plus 1PM, and Shelly 2.5 are the current products that can monitor power at an outlet. I’m using mostly Shelly 2.5 so that I can monitor each socket individually with just one device after removing the breakaway tab on the outlet.
Dimmer 2 Shelly does not work with my existing dimmer switches, I had to replace them with something like the Leviton 5657-2W momentary rocker switches. Even then, their behavior is fairly pre-defined, you can’t customize it as much as I hoped. The buttons work as follows: Single press to turn on or off. Double press up to go to max brightness, double press down to go to min brightness. Hold up or down to adjust brightness.
