Fiber Optical Receiver 1) 10bit PCM 2) PAL,NTSC,SECAM compatible 3) ... swapplug and playSupport RS232RS422RS485 and other data port ,set freelycompatible with NTSCPALSECAM video systemsurge protection, auto recoverno EMI,RFI and ... humidity................................ 095% no condensation CCTV Optical Transceiver Fiber Optical Receiver 10 digit PCM Fiber Optical Receiver with LED status display