This is a sound effect of switching on the light. This is a regular wall switch.

Seven versions are included full:

File A – Switch On Off (Version 1) 0:01
File B – Switch On Off (Version 2) 0:01
File C – Switch On Off (Version 3) 0:01
File D – Switch On Off (Version 4) 0:01
File E – Switch On Off (Version 5) 0:01
File F – Switch On Off (Version 6) 0:01
File G – Switch On Off (Version 7) 0:01