1. Intelligent Testing: The visual fault locator can test breaks and bends in optical fibers, providing complete fiber identification. 2. Wide Application: Enables broad application in telecommunications, CATV technology and maintenance, integrated cable construction, etc. 3. Reliable Operation: Contactless connection guarantees no damage, and the output power is unlikely to be affected by voltage fluctuations. 4. Easier to Use: Simple operation coupled with a 5km output distance significantly simplifies testing and greatly improves work efficiency. 5. Easy to Carry: The lightweight and compact red light pen is powered by 2 AA batteries (not included), easy to carry and store. Specification: Item Type: Visual Fault Locator Model: HT-5 Material: Aluminum Output Wavelength: 650nm ± 10nm Optical Output Power: > 5MW Fiber Optic Adapter: Universal Connector Output Distance: Approx. 5000m / 16404.2 ft Operating Temperature: 0 - +60℃ Storage Temperature: -20 - +70℃ Battery Type: 2 x 1.5V AA battery (battery not included) Package List: 1 x Visual Fault Locator 1 x Pen Pocket 1 x Lanyard 1 x User Manual Note: Do not point at eyes.