JHA-D1TV1RB-20 optical video transmitter thiab receiver kis 1ch video thiab 1ch RS485 cov ntaub ntawv teeb liab ntawm optical fiber.Ntawm 9/125um Ib hom fiber ntau nws qhov kev ua haujlwm nrug yog 20Km txog 80KM thaum nyob rau hauv multimode fiber nws yog 5Km.