¡ò Line selection switch, Flexibility to select NO/NC alarm output, adapt to different monitoring equipment; ¡ò Excellent EMC performance; ¡ò Automatic temperature compensation technology, in high temperature environment, still maintain a relatively high detection sensitivity; ¡ò Sealed sensor design, improve detection stability and capability of dust; ¡ò LED light, flexible setting by line selection, on/off by user selection, prevent the spy; ¡ò Adjustable trigger pulse count, reduce risk of errors; ¡ò Award the design patent.