Buy 4x Shelly Plus 2PM & Get 1 Free $187.96 (Was $234.95) + $9.99 Shipping ($0 with $200 Order) @ Oz Smart Things

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AssociatedOz Smart Things on 05/03/2023 - 18:07 ozsmartthings.com.au (543 clicks)
Last edited 05/03/2023 - 18:29 by 1 other user

Buy 4 Shelly Plus 2PM Get 1 FREE - 2 channel Wi-Fi relay with power metering and cover (roller) control

We are bringing you deals every Sunday but be quick this deal will only run for 24hrs

Shelly Plus 2PM is a one-phase, two channel smart relay supporting up to 10A per channel and 16A total current (18A peak). It is equipped with two power meters for each channel and an overpower protection function to limit your energy consumption. Cover (roller) control allows for the control and monitoring of roller shutters, blinds, curtains, gates, or other bi-directional AC motors.

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  ozbking on 05/03/2023 - 20:57

  Relay switches are amazing to use, can utilise existing physical switches while providing smart functions.

  However, it’s frustrating you need an electrician, neutral wire, and in this case, wifi is a poor choice, given the latency and the possibility of overloading the router, especially if you install 30-40 lights

  • 

    ozbking on 05/03/2023 - 20:58

    +2

    Would recommend Zigbee ones instead (better yet, wait until the Matter through Thread ones become available)

  • 

    scottb721 on 05/03/2023 - 22:20

    +1

    re overloading the router with too many devices - Just add a second dedicated router off the primary for smart home devices.
    Most ppl usually have a old Telstra/Optus one stashed away and they're soooooo underutilised.

    I use one via using its LAN port just for its wifi, but worst case double natting via the WAN would have little latency impact switching lights and other devices on and off.

  • 

    cyssero on 05/03/2023 - 23:10

    +1

    Can't argue about the need for an electrician and neutral wire concerns, however I have zero issue with about 30 relays on my Deco M5 network in a 2 storey. The WiFi is rock solid responding within 1-1.5s with Alexa and instantly via Shelly app.

    • 

      wormarts on 06/03/2023 - 00:02

      Yeh I think the “overloading your router” thing is overblown.

      These devices communicate very little on a regular basis. Unless you’re flicking 100 switches on and off simultaneously, I doubt you’d see any real issues.

      Assuming you have good Wi-Fi strength in your home. No mesh strengthening like you get with Thread or Zigbee.

      • 

        scottb721 on 06/03/2023 - 01:13

        Perhaps. I've had client's homes where Chromecast was saying it was being rejected because of 'too many devices' on the router.

        • 

          wormarts on 06/03/2023 - 10:09

          @scottb721: Is it because they use cheap/low-end routers? I’ve heard that’s a likely cause.

          Otherwise, it does seem odd to me that a router won’t accept 100 devices connected to a network, when you think of phones, tablets, computers, printers, smart appliances… I think some household can definitely get up to 50 devices connected without even considering home automation stuff.

          • 

            scottb721 on 06/03/2023 - 13:19

            @wormarts: Yeah ISP supplied

  • 

    wormarts on 06/03/2023 - 00:04

    +1

    There is a model that doesn’t need a neutral wire! I got some of these recently for a place with no neutrals in the switch box. They work a treat.

    Latency is negligible in practice. I agree that it’s inconvenient with needing an electrician. That being said, playing with mains power is dangerous if you don’t know what you’re doing. To anyone reading, even watching a quick YouTube video still doesn’t educate about the risks. Please be careful!

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  priceaintright on 05/03/2023 - 22:59

  Would this be appropriate, used in-line for air conditioners to monitor power consumption?

  • 

    Yakkus on 06/03/2023 - 07:57

    +2

    I am not an electrician (wish I were tbh, if I were younger I'd be cashing in), I have a bit of smart home stuff

    Typically, energy intensive appliances like air con, washing machines or dryers can draw very high power periodically and need special smart plugs that are rated a lot higher than standard plugs. Air con can periodically draw extremely high current that will fry some in line stuff :)

    You would need to get an aircon installing electrician to look at yours and tell you whether these can handle its draw or possibly set your house on fire. And then they'd have to install it anyway since it's illegal to install your own hard-wired smart stuff in aus.

  • 

    wormarts on 06/03/2023 - 10:11

    I think there are switches that are rated for high current drawing appliances.

    You could look up the spec sheet for your AC and then look on the Shelly website.

    As @Yakkus said, please don’t install it yourself though!

    • 

      priceaintright on 06/03/2023 - 12:09

      Heck no I wouldn't install something like that myself — but was looking at options for sending a signal to an IR blaster when AC is detected as on, to switch it off, past a certain time.

      I've read about some creative solutions around using window/door sensor on the fins, but have wondered about something installed in-line that can definitively indicate the unit is on.

  • 

    boomramada on 06/03/2023 - 11:54

    Max total device current 16 A (18 A peak)

    Probably can but I wouldn't recommend it.