Please, switch off the light !!!

hi,
today, first test with my USB-UIRT...
Waou, that's great... but, the night, impossible to use it !
I only can use if I put my remote near to the USB-UIRT, and hide all in the dark.
When I switch off my light, USB-UIRT works like a charm.
I think there is a trouble with my lightbulb (Philips WW 827 E27 ES 18 W).
With a classical 40W bulb, USB-UIRT works...
IS my USB-UIRT damage or is it too sensitive to the light ?
Thank you for answers
today, first test with my USB-UIRT...
Waou, that's great... but, the night, impossible to use it !
I only can use if I put my remote near to the USB-UIRT, and hide all in the dark.
When I switch off my light, USB-UIRT works like a charm.
I think there is a trouble with my lightbulb (Philips WW 827 E27 ES 18 W).
With a classical 40W bulb, USB-UIRT works...
IS my USB-UIRT damage or is it too sensitive to the light ?
Thank you for answers