... multi mo Specification:Driven by constant current source, the indicator can emit stable red laser. The product can be ... point to bottom of the indicator, anode of batteries contact cathode of the indicator).2. Connect the body with ... the dust cap. If you don’t use the indicator for a long time, you must take out the ... . Fiber Optic Visual Fault Locator/Red Laser Indicator/Pen-type Cable Fault Locator