I am using deconz II usb on HA; generally i am quite satisfied with zigbee products and stability; however most of the chinese products i got from aliexpress are generally problematic. I find myself spending money and throw them away. Here are my findings so far:
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Xiaomi and Aqara products all work quite satisfactorily, i found no problems with them.
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Gledopto GL-C-008 Strip LED Controller works fine; however the power-on behaviour is not configurable and on power cuts it always come back ‘On’ whether it is on or off before the power cut. And also if the power cut duration is long, it appears ‘unable’ and you have to power it on and off in order to join to the zigbee network again. Won’t reccommend.
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Blitzwolf BW-SS7 1/2 gang smart socket works fine again; however it has the same problems that gledopto has; no power on behaviour and loses network on power cuts.
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Blitzwolf BW IS4 Temperature and Humidity LCD Screen works quite nice; no problems so far.
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Sonoff Basic ZBR3 works quite nice and remembers power on behaviour. The only problem is that it doesn’t have an external switch connection.
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Tuya Smart Plug is lacking power measurements with deconz usb ii, itt works as a dumb switch, on and off only.
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IKEA Tradfri range extender: Generally works fine; but sometimes the led turns off and it doesn’t work; you have to plug it off and on again.
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Tuya Thermometer, Humidity, Light Sensor e-paper , don’t ever buy this. Aside from zigbee issues, it doesn’t work at all, always shows 0; how do they sell this garbage that is not even working…
So, my own experience is that in order to keep the price low; most of the chinese zigbee product manufacturers don’t use EEPROM or whatever which prevents to set or config power-on behaviour.
I find only Philips Hue and Xiaomi-Aqara products reliable. If you guys can share your findings with specific zigbee products, we could get rid of spending money for useless products…