Schematic diagram of a 12w 220V LED Light Bulb made by Star Light / pictures of the disassembled light bulb.
Schematic diagram of a 220V 50Hz/60Hz 5.5W LED Light Bulb made by FSL / pictures of the disassembled light bulb.
Although LED light bulb manufacturers often guarantee their products to last as much as 5-10 years, a quite big percent will fail even after a few months, especially the ones made by no-name brands. The good news is, that they are quite easy to repair.
A simple ethernet toggle switch for 10/100 or Gigabit connection with a multi-pole rotary/sliding/push-button switch or relays.
DIY Bluetooth Mini-PCIe module to USB adapter.