wired type, 2-beams, outdoor detecting distance:5M, valid length:37CM ● With original U.S produced IC, CPU microprocessor, it automatically adapts to digital intelligent control, wired and wireless optional, 4 kinds of frequencies for choice, it is suitable for different occassions and is compatible with any brand of host . ●With rain,fog,snow immune function, It can be all-day outdoor use.Ant-tamper, anti-shear ,anti-Movement, dual-beam identification principle can effectively prevent false alarm caused by small animals, birds and other small objects. ●Stepless 360°rotation to achieve fast and precise focus, unique terminal to make installation convenient.  ●Wired and wireless models for choice ●Beams choice:2 beams/4 beams /6 beams/ 8 beams /10 beams