The AX-70/130/200TN Series of short range photoelectric detectors are compact in design with IP65 high durable structure. Rubber packing is used for all conceivable points where water, dust or bugs may penetrate, such as wiring holes, wire ports and the outer chassis. Preventing these factors helps deliver performance with higher reliability in severe outdoor environmental condition. In addition, the length between the upper and lower optics, and the width of the optics are ideally engineered to produce the most intelligent detection pattern which reduces false alarms by detecting human intruders only.