[High efficiency]Easy identification of fiber breakpoints, poor connecttions, bending or cracking. Excellent for finding the right fiber to splice or quickly finding a break. Our 30mW Visual Fault Locator Emit a 650nm Bright Red Light For Fiber Tracing, Fiber Routing And Continuity Checking Efficiently, Breaks Or Faults In The Fiber Will Refract The Light, Creating A Bright Glow Around The Faulty Area. [Excellent Functions]The fiber optic tester is perfect for field tests because of its multiple functions such as constant output power, multiinterface adaptation, low battery warning, long battery life, and longdistance detection. Super bright and uses convenient AA battery. [Widely USed]2.5mm Universal Connector the connector of the detector is compatibly designed for ST, SC, FC interferes both in circle and square shape of different fiber optic cables. [Long Output Distance]The 30mW visual fault locator has a strong output power, can output a strong red indicating light, up to 2030 kilometers. The highefficiency power supply circuit ensures a stable power supply. [Crashproof and Dustproof Design for Pen Head]It Is Designed With Stainless Steel Head And Aluminium Body To Prevent Crash And Dust, And The Case Ground Design Prevents ESD Damage Efficiently. Colour: black + blue Material: metal Package Contents: 1 x 30mW fiber optic pen (powered by 2*AA batteries without batteries) 1 x FC male to LC female adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.