Visual Fault Finder, Wavelength Range: 670 NMTR, Distance Range: 5 KM, Optical Connector: 2.5 MM Universal, Operating Temperature: -10 To 50 DEG C, Enclosure: Rugged Solid Aluminum Body With Protective Santoprene Over-Sleeve, Dimensions: 1-1/4 IN Diameter X 8.7 IN Length, Light Source: Class II Laser Diode, Spectral Width (FWHM): Less Than 5 NMTR, Laser Light Pulse Duration: Continuous In CW Mode 600 MS In 1 HZ Modulation Mode, Environment: 0 - 95 PCT RH (Non-Condensing) Operating, Storage Temperature: -20 To 80 DEG C, 0 - 95 PCT RH (Non-Condensing), Power: (2) 1.5 V AA Alkaline Batteries, Weight: 0.3 LB (Without Batteries), 0.507 LB (With Batteries), Battery Life: Greater Than 80 HR, For Finding Breaks, Faulty Splices And Crimps Poor Components Or Connections