Like many others, I have a problem with the fact that even if the smart light switch is mounted right next to the original one, guests and others still use the original switch. This results in the power to the light bulbs being cut and it is not possible to turn the lights back on in any other way than with the original light switch. Then the "smart function" is gone. By mounting the smart light switch OVER the original switch and thus blocking it, I hope this problem disappears.