Dead on arrival, these should not be hard to test before packaging them. I received both defective units and AliExpress only wants to refund half what I pay for them. It's a perfect scam for unloading defective units it seems.
These were received and were dead on arrival. It's easy to test before packaging them and sending so, I'm assuming that these were defective from the start.
Took a very long time to arrive and they don't work.