rektifier to Technology@lemmy.mlEnglish · edit-21 year agoHow Passive Infrared motion detectors workwww.youtube.comexternal-linkmessage-square0fedilinkarrow-up112arrow-down10file-text
arrow-up112arrow-down1external-linkHow Passive Infrared motion detectors workwww.youtube.comrektifier to Technology@lemmy.mlEnglish · edit-21 year agomessage-square0fedilinkfile-text