Parameters:Type: 10KMWavelength : 650nmFiber type: SM/MMConnector: 2.5mm Universal connectorWorking Mode : CW,Pulse(3HZ and 9Hz)Power Supply: AA*2 Alkaline batteries (included)Operating Tamperature : -20℃~+60℃Storage Temperature : -40℃~+85℃material : MetalApplications:Telecommunications Engineering and MaintenanceCATV engineering and maintenanceCabling SystemOther fiber-optic projectPackage Include1 x Visual Fault Locator1 x Black bag2 x AA Alkaline batteries