* M18 laser photo sensor,  power consumption ≤1mW.* Long detect distance: 0-20M.* Fast response <3ms.* DC 10~30V supply or DC 5V special;  rated current ≤200mA.* NPN or PNP output; NO, NC or NO+NC.* Capability of working under sunlight without any influence.* Straight light ≤2mm light spot,  able to detect tinny objects: peanut, copper thread...etc.* Nickle plated brass, IP67 ratings, water resistant.* Advantage:  laster sensor emitter has small light sending angle, light is concentrated and strong,    receiver is strong for receiving and feedback, capable of getting through rain, snow, frog, sand...etc, to avoid m malfunction.