When the lamp is placed in a considerably light when turn on, about 1 minute, then install chafai will extinguish but when in low light to light automatically.
When placed in a lamp with a light enough to turn the switch lights up for about 1 minute, then goes off, but in low light, the light turns on automatically.
When put the lamp in the light enough when opening the light switch will stick around 1 minutes, then goes off, but when in low light lighting it automatically.