the moultrie 2.1 has an auto flash or u can turn the flash off (security mode), but if you're going to have the flash on and have problems with white-out pictures during the day because the flash is goin off, that can be easily remedied by making the hole around the light sensor a tad bit bigger, since doing that i havent had that problem at all,great tip about the flashing light, i'll hafta try that.