We use TC-305 as the emitting component of 0650 series fiber fault locator. Driven by constant current source, the indicator can emit stable red laser. The product can be used to inspect fiber failure when they connect with optical interface and be inserted into single mode or multi mode optical fiber. It is indispensable tool in fiber project constructing, fiber net-work maintaining, optical component manufacture and research. Technical parameter: Wavelength of optical source: 650+10nmApplicable fiber type: Single mode or multi modeOutput power in single mode: 5 mWPower: Two 1.5V batteriesContinuous working time of power: ≥ 20 hoursWorking temperature: 10~+60(not dewing)Storage temperature: -40~+85Material of the shell: Cu-alloy or stainless steelDimension: φ 24× 170mm (without interface)Weight: 160g (without batteries)Outer structure: