Quad beam has 4 parallel beams that mean multiply by 4 times of the infrared. The farther infrared emits distance is, the larger beam receive area is. Therefore, if the detection distance is 100 meters and the beam diameter is about 3 meters, which covers the entire receiver.
Synchronized quad beams reduce false alarms caused by wild animals, flying birds, falling leaves or litter, plastic bags, etc. blowing through the beams.
Quad infrared detector: https://reurl.cc/Qdpo0O
#Quad infrared stability is the best for the longest detection distance
#Large detection area