... 1310nm,1490nm,1550nm wavelength laser output ,650nm visible laser source output optional. Using Advanced laser control technology for engineer, ... , backlight auto-off or manual on/offTwo AA batteries, easy to changeSpecification PON Stable Laser SourceOutput wavelength ... CW/270Hz/330Hz/1KHz/2KHzFiber TypeSMConnector typeFC/PCVisible Laser Source (Visual Fault Locator)Output wavelength650nmEmitter TypeFP ...