Was told in case of any fire, this type of illegal items will deem the insurance invalid
All adapters will void fire insurance if it does not have the safety mark, if the source of the fire is found to have started from that device.
The Samsung AX40 will void the fire insurance if it started from there first as it's a 220V 60Hz appliance. So will the 110V Honeywells + transformers from Amazon etc. So will your China power adapters on 220V charging power banks, in case the adapter burns or the power bank Li-Co cells vents and burns.
Higher risk items include those 24/7 aquarium pumps from China, Jiebao etc etc. Happened before.
That said, I have about 15 smoke detectors so no problem there.
Operation wise, I think the Samsung AX40 can be said to be safe. Whacked it many times for 24-48hours 1 continuous shot in High speed.
Not only me...others also.
The Amazon Honeywell/Winix + transformer issue has been discussed before for quite long in the 2013 Air Purifier thread.
I originally had 8 detectors only, then this year before CNY my neighbour's unit 2 units away really kena fire. And stuff on taobao is cheap, so bought more.
No worries, the detectors work and have test button/test light in operation, I tested 4X with real smoke and they are sensitive enough.
9V batteries (Energizer Industrial Alkaline batteries) I bought from Amazon. 19 dollars for 12 pieces. Still got juice after 1 year plus.
Compare with 5 dollars plus for local retail. WTF?