Grounded

According to the electronics123 catalog the "PIR Movement Detector Module" (KC7783) has a fresnel lens already integrated.

Here is a piece of their description:

"A pyroelectric sensor module which is developed for human body detection. A PIR detector with a fresnel lens are mounted on a compact PCB tohether with an analog IC...."

The detection range is 3 meters, do you think this module will be reliable if I connect it to a pic without any additional fresnel lenses?

Thank you koossa