Just went through Xiaomi forum.
This seems to be a known issues caused by inferior resistors (only non-neutral version) for a few users in year 2017.
And Aqara claimed that they had changed the supplier.

When did you buy your switch?
Or do you know its manufacturing date?

I actually have 1 of such switch installed in my room few months ago.
Starting to get worried.

Your storage heater is mounted in 20A switch doesn't mean you need a 20A smart switch.
AFAIK, it peaks at 3kW.
A 16A sonoff Pow R2 or Aqara Aircon companion may work.

As a matter of safety, personally I don't have confident to put high power appliance on these devices.

hi guys,

Anyone knows where to buy the curtain track for motorised smart curtain?

Is there any compatible version?

Good info, I may get from them.

How much did you pay for the shipping?
In my opinion, the track length is hindering me from purchasing oversea due to the shipping cost and handling reliability.

Sorry that I missed this question from you.
I just saw @blancpain4470 posted U-Bolt pro then only realized your question few months ago.

FYI, I have been using UltraLoq UL1, AutoBolt and Bridge for since June 2018.
The status:

UL1:
* Still working but the lever is shaky.
I dismantled it and found it's not because of loosen screw..
Likely a mechanical design flaw and no clue to fix it.
* The fingerprint sensor requires few trials to get it through.
* Out of battery 3 times without early signal.
Otherwise, it is still usable now.

AutoBolt:
* Motor spoiled after few months.
Claimed for a replacement unit from US.
Working till now.
* Out of battery 2 times.

Bridge:
* Blew up one unit.
* Got a replacement unit and spoiled within a year. No plan to get another one.


I have another Korean's digital lock at home.
As a comparison, Ultraloq must be handled with care.
I'm going to buy new digital locks for my new house and Ultraloq is out of my consideration.

The second one didn't blow, just died miserably.

My first one is really "blowing". The casing dropped out and dark burnt mark on chip.
For my 2nd unit, Ultraloq said they didn't fix anything on hardware but merely some software tweaks.

Yes, the bridge is for wifi connection.
With it, you can control the lock even if bluetooth is out of range.
Also, Alexa and GA require it to work.
I tried GA integration but it's pretty useless.
Never tried Alexa.

UL300 is smilar to UL3.
IMO, the optical fingeprint sensor is not that good.
And I have a phobia about the lock quality.

Samsung DP609 may be OK but I have never used it before.
Only that I heard it is WiFi lock which may drain battery faster than others.
Also, the striker plate is incompatible with many doors in Malaysia.
A good installer is needed.

I'm using aqara curtain with track since last year.
It cost about RM650 for motor with 3.5m track from lazada seller.
The track length is customizable.


I'm also using such blind from aqara now.
Directly ordered from taobao for 2ft x 11ft size with "shangri-la" blind.
All-in cost is about RM450 for motor + blind.


Integrated with home assistant.
All of these have been running since Apr 2020.
So far so good.

Mine is inclusive or both aqara motor and roller blind.
I’m not sure if they can supply the casing and blind only.
Link: taobao

If you already have existing blind, this should be the cheaper option.
But, it may not work well with heavy or rough blinds.