Features CONCEALED LASER HEAD DESIGN: Turn on the laser head immediately when power on, shut down and synchronous recovery of the laser head, saving time and effort, more conducive to protecting laser head, bring longer service life ADJUSTABLE LUMINOUS POWER: The fault locator can adjust the luminous power according to the actual test requirements, switch between three stages, energy saving and environmental protection, to maximize the product usability. The luminous power set befor SELF REPLACEABLE CERAMIC CORE: Visual fault locator ceramic core is replaceable to extend equipment life THREE UNIVERSAL INTERFACES: Fiber optic source tester support SC, FC, ST fiber interfaces to meet different test needs APPLICABLE SCENARIO: Visual fault locator can realize the optical fiber fault detection function, which is an indispensable tool in optical fiber engineering construction, optical fiber network maintenance, optical fiber device production and research Specification: Item Type: Visual Fault Locator Output Distance: 30KM Working Current: ≤170mA Endurance: >5h Charging Time: ≤5h Charging Current: ≤300mA Charging Voltage: 5V Static Current: ≤15uA Level Output: 3 Level adjustable Output Wavelength: 650nm Interface Type: Approx. 2.5mm / 0.1in universal adapter Working Temperature: -20℃~+60℃(no condensation) Storage Temperature: -40℃~+85℃ Power Supply Type: 1 x 400mAh rechargeable lithium battery Package List: 1 x Visual Fault Locator 1 x Ceramic Tube 1 x Data Cable  1 x User Manual Package List 1 x Visual Fault Locator 1 x Ceramic Tube 1 x Data Cable 1 x User Manual