Smallest zwave/zigbee Ha Product

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I have a gate that open with HA, one of my children don’t have a smartphone, what is the easiest way to give him control to this gate when comes back home so he cam enter without a key. I thought of the smallest zigbee/zwave button, do you know one?
any better Ideas?

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looks good! thx! anything cheaper?

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ZigBee version of a remote.
Works with ZHA.

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I bought a Fibaro key fob and promptly returned it:

  • The buttons are designed to be pretty, not to be used. Each has a different surface area, so are very awkward to press; especially the -.
  • The CR2450 battery enclosure cap is very hard to open and close. The rubber o-ring seal rebate is cut-away in two places for battery contacts, making getting the cap on without damaging the seal difficult.
  • Fibaro refuse to release firmware updates to customers - only via their own HomeCentre.

Personally, I’d go for a cheaper Zigbee remote, or for Z-Wave an Aeotec NanoMote Quad.

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Yeah, it was the first link I found. I’ve never used one myself.

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do you know a cheaper and still small remote?

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Several things that I can think of would be:

  1. A Tile and a ESPHome Bluetooth Tracker

  2. Any 433MHz remote and an OpenMQTTGateway

  3. A camera with facial recognition

  4. A NFC tag reader, with one of the multitude on tags

  5. A key in the fake rock in the garden : )

Those are a couple of ideas off the top of my head.

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thx
2. How do you install/program 433mhz remote and openMQTTGateway?
4. it would mean leaving outside with power supply a NFC tag reader?

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just found this
link

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  1. This site will help:
    https://docs.openmqttgateway.com/

  2. You could build a tag reader that works on a battery, but you will have to charge it every so often, or get clever an add a solar charger to it.

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just found this, do you think it will work with HA?
link

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are there any 12V tag readers ?

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I would imagine any 433MHz remote would work, cause all you are doing is capturing the code it sending, and when the gateway hears/receives the code it forwards it to HA, and from there you can do whatever you want with automatons.

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Probably, zigbee should be universal, but tuya don’t play nicely.

Good info here Database of Zigbee devices compatible with ZHA, Tasmota, Zigbee2MQTT, deCONZ, ZiGate and ioBroker

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I’m not sure about 12v tag readers, but you could use a voltage step down regulator like this:

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Oh good call out on that @nickrout. So many choices, so many ways, I love it.

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Also Zigbee2MQTT

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I hope this is helping, even though we are flooding you with idea, but choices are nice.

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Oh perfect idea for a kid, @nickrout made me think of this. What about an Aqara Magic Cube, and set it to shake it for entry.

https://www.aqara.com/us/cube.html