I’m becoming increasingly impressed by the tiny Aqara sensors – first of today’s bunch – Original Aqara Smart Motion Sensor
And here below is the motion sensor, running smoothly with my new Electrolama ZZH dongle (coordinator) running Zigbee2MQTT. I long-pressed the tiny button on the side/top/bottom of the sensor and the ZZH immediately picked it up and added it to the network.
I renamed it to “aqara-movement-1” to avoid having to memorise the usual cryptic Zigbee numbering. I’m thinking as this is actually vibration-sensing rather than movement sensing, it belongs on a window or door – or anything indoors really where you want to detect vibration. I THINK the part number is DJT11LM (the box was in Chinese). Size of the unit is 36mm x 36mm x 9mm
A quick screen-grab of the payload should show you all you need to know about this tiny device. The ad states that “Aqara Smart Motion Sensor need to be used with Xiaomi Upgrade Version Multi-function Gateway or Aqara Hub. Cannot be used independently. Please confirm the model of the gateway before connecting.” – Trust me, it’s working without any of that using my Zigbee2MQTT-based SONOFF and dongles.
Above is what comes out of an MQTT payload when you shake the sensor (I was holding it at the time) – simple.
Next: the “Original Aqara ZigBee Version Window Door Sensor“. This time model ID MCCGQ11LM. The manual comes in English and other languages. The main unit is 41mm x 22mmm x 11mm (the magnet is much smaller).
I have no idea why it’s giving temperature as well, but that’s a bonus – though the latter didn’t seem to change when I blew on it. The contact status however, definitely changed..
Next: The “Original Aqara Smart Wireless Switch” or BUTTON to be more accurate. Spec: model WXKG11LM – size 45mm x 45mm x 12mm
I should point out that in all of the units covered here, adhesive pads are already attached for mounting and spares are supplied.
This is a simple one – you (hopefully) can’t go wrong with a button… I covered this and more in the first part of this Zigbee article but here’s a little more. The data from the button offers “single”, double, or – if you hold the button down for a while – “hold” then “release”. SO, if you could for any reason not see the light itself – you could if you wished, use the long-press “hold” option (or “double” action to ensure the light is OFF (or ON).
Actually while I’m here, links for all of the sensors below – I have to say, the Sonoff sensors are good but I prefer the Aqara range up to now purely as they are nicely rounded and use inexpensive CR2032 batteries. Don’t ask why I have 2 links for the Aqara temperature/humidity/pressure sensors (below) – I’ve no idea.
As for why I’m favouring Zigbee temperature sensors over DS18B20 or DHT22-based sensors with ESP8266 controllers (you’ll see plenty about those in previous blog entries) – simple – ok, changing the battery every year or two is a pain but on the other hand – nice case, no worries about false temperatures caused by heat from the control circuitry, easy to use.
As for the battery – you could of course predict battery failure as you can read the voltage at any time. I like it. I need to get some feedback from experienced Zigbee users as to battery fail prediction… as in – at what percentage (or voltage) would one consider it time to change battery..
Next: The Aqara Smart Home Temperature and Humidity Sensors – I have lots of these..
Atmos Version Original Aqara Smart Home Thermometer
Atmos Version Original Aqara Smart Home Temperature & Humidity Sensor
Original Aqara ZigBee Version Window Door Sensor
Original Aqara Smart Motion Sensor