Smart Series Optical Time Domain Reflectometer adopts a 3.5-inch color capacitive touch screen, Which is simple to operate. It integrates eight major functions such as OTDR, Event map, Stable light source, optical power meter, red light source, Network Line Sequence Test, line finding and lighting. Simple parameter setting and intelligent measurement make the operation more  simple and efficient. The model is small and light, easy to carry. The wireless charging function is supported, and the large capacity battery ensures 10 hours of ultra long time measurement and 20 hours of ultra long standby, providing guarantee for field testing.