Handheld 10mW Optical Fiber Tester Portable Pen Type Red Light Visual Fault Locator Fiber Test Pen Support 2.5mm FC/SC/ST Interface Features: High-performance probe head, stable and strong penetration effect. Standard 2.5mm interface, support FC/SC/ST. Aluminum alloy material, anti-oxidant, corrosion resistant and wear-resistant, comfortable hand feel. Push-type button, one-key to operate. Portable design, not occupy much space, easy to carry and use. Specification: Output power: 5mW/10mW/20mW/30mW/50mW(optional) Wavelength: 650nm Universal interface: 2.5mm(FC/SC/ST) Battery: 2*AA batteries(not included) Item size: 17.5 * 2.6cm /6.89 * 1.02in Packing list: 1 * Optical fiber tester 1 * Storage bag 1 * Lanyard 1 * User manual