Factory direct 40mw red pen, fiber detection pen, fault fiber optic tester, the pass light pen Features: quantum well LD light source 2.5mm Universal Interface steady pulse two working modes constant power output aluminum case, rugged nanotechnology, multiple electrostatic protection with optical interface protection device pen design, use, and easy to carry packaging with rechargeable battery and charger through a fiber-coupled optical power OTDR dead ensure eight hours before leaving the factory 50 ° C high temperature test product features: fiber breakage, bending and fault location within fault check the end-to-end fiber identification the mechanical splice point to optimize product application: telecommunications, CATV engineering and maintenance of integrated wiring construction and maintenance of optical device production and research other fiber optic engineering technical indicators: the product model HLB0650R40H operating wavelength of 650 ± 10nm Output Power (mW) ≥ 38km ≥ 45km Fiber Type SM, the MM test interfaces 2.5mm Universal Interface (FC / SC / ST) Operating Temperature (℃) -20 ℃ to 60 ℃ (no condensation) Storage Temperature (° C) -40 ° C 40mW 50mW detection distance ~ 85 ℃ casing material Aluminum alloy Overall size (mm) φ24x138mm (without interface) power specifications 18650 rechargeable battery Product Weight (g) 150g (without battery) Package black canvas bag white box Zhengzhou Hanson Radio and Television Communication Equipment Co., Ltd. Tel :0371 -53,769,167 Sales: Naidu 13,598,018,197 QQ: 1006519081 Address: Zhengzhou City Zijingshan Road and East Avenue Interchange west 300 meters