Features 1、[Stable Red Light] NF‑904 series red light source uses a 650nm semiconductor laser as a light emitting device, driven by a constant source, emits stable red light, and enters multi mode and single mode fiber after connecting with the optical interface to realize fiber fault detection function. 2、[Strong Penetrating Power] The light source has strong penetrating power, the high quality laser head can easily pass through the optical fiber, the transmission distance is long, and the performance is stable. 3、[High Quality Chip] The built in high quality chip is durable, and it is suitable for a variety of interfaces to fully meet the needs of optical fiber inspection work. 4、[Durable Material] The optical cable fault locator is made of high quality aluminum alloy, which is durable, safe, wear resistant, and can be used with confidence for a long time. 5、[Widely Application] This optical cable fault locator is widely used in many situations, and is a practical tool for optical fiber engineering construction, optical fiber net maintenance, optical device production and research, etc. Specification Item Type: Optical Cable Fault Locator Material: Aluminum alloy Battery: 2 x AA 1.5V (Battery Not Included) Application: Optical fiber line inspection Language Version: English Applicable Interface: FT, ST, SC Light Source Wavelength: 650±10nm Applicable Fiber: SM, MM Connector: Approx. 2.5mm / 0.1in universal adapter Red Light Source: Semiconductor laser Working Temperature: -10℃~+45℃ Storage Temperature: -15℃~+50℃ Package List 1 x Detector (Battery Not Included) 1 x Storage Bag 1 x Manual