DP接口光端机(Profibus协议)/Profibus光纤modem(DP接口)
16路电话+8E1+4FE+4路串口 光端机(19英寸1U)
YTS4D1S 4路工业级RS232/485/422串口光端机(model)
YTS3D1S 3路工业级RS232/485/422串口光端机(model)
YTS2D1S 2路工业级RS232/485/422串口光端机(model)
YTDS277SM 工业级RS232/422/485串口光端机(model)
YTS1D1S/B 1路工业级RS485串口光端机(model)
YTS1D1S/A 1路工业级RS232串口光端机(model)