by HGST, November 01 2018
I got a few Non-Neutral Wall Switches (model QBKG03LM) that fails to work after less than a year.
Even when I manually press the buttons, the lights cannot turn on. I opened up the switch and there dont look like anything is burnt. The three fuses are okay too.
I read other forums, it seems there are many people facing the same problem. May I know why is this happening?