Operating Wavelength 1550nm1310nm Optional Fiber Type 9/125um SM Fiber Optical Connector Type FC/PC Detector Type InGaAs Peak Power of laser(mw) 60 Max. Displaying Distance Reflection Event(km) 60 (1dB) Non-reflection Event(km) 20 (2.5dB) Measurement Unit M Reflection Event Dead Zone 15m Distance AccuracyReflection Event ±2m+2*10-4X Distance Wavelength of VFL Option(nm) 650 Output Power of VFL Option(mW) >=1 Date storage capacity 1000 Communication Port USB Power Supply Alkaline Battery (3pcs AA 4.5V Batteries) Battery Operating Time 5000 measurements Working Temperature() -5~40 Storage Temperature() -10~60 Humidity 0~85%Non-condensation Dimensions(mm) 200 X 90 X 50 Weightg 320