This lamp holder has a security system that, in order to protect you from electrical shocks while you are changing the light bulbs, do not allow it to unscrew.
If the necessity to unscrew it should present, it is possible to unblock it by pointing at the security flap you will find at the base of the lamp holder with a screwdriver, while you are turning the lamp holder.
This lamp holder has a security system that, in order to protect you from electrical shocks while you are changing the light bulbs, do not allow it to unscrew.
If the necessity to unscrew it should present, it is possible to unblock it by pointing at the security flap you will find at the base of the lamp holder with a screwdriver, while you are turning the lamp holder.