does an 5 line sensor array work in the dark?

hey every one, i am building a grid solving bot for which i am using the following 5 line sensor array
http://robosoftsystems.co.in/roboshop/index.php/home/grid-solving-sensor-module-digital-output-designed-for-nexus-competitions.html?SID=92ea334e4521368651e79e6dd6301ca3

i just wanted to know if the ambient light plays any role in the sensor detecting a white line from the black background.

this info will help me decide the structure of my bot.

thanks!!

The manual says that the detectors have a daylight blocking filter built in so it looks like ambient light shouldn't have an effect.

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Martyn.

yes i overlooked that.. thanks:P