Specifications

Model277/B is one kind can offer RS-485/422 serial port carry transparent optical fiber modem of transmission to get end to user

Specifications:
RS-485/422
Standards: EIA RS-485, RS422 standard
RS-422 signal: T+, T-, R+, R-, GND
RS-485 signal: D+, D-, GND
Working mode: Asynchronism, point to point or multi point, 2 wire half-duplex,4 wire full duplex
Baud rate: 300~500Kbps, auto test serial signal rate detect signal speed automatically, zero delay time
Transfer distance: RS-485/422 side:1.2Km(9600bps)
Max number of drops: 128 nodes(RS-485/422)
Port protect: 600W surge protection
                      15KV ESD protection
Fiber Optic
Connectors: SC, FC or ST, optional
Fiber optic cables: Single Mode:8.3/125,8.7/125,9/125 or 10/125 um
                              Muti-Mode:50/125,62.5/125 or 100/125 um
Transmission: 20, 40,60,80, 120km(SM), 
                       2 km(MM) optional
Wavelength:850nm,1310nm,1550nm
Power
Power input: Power External 5VDC
Consumption: 120mA
Environment
Operating temperature: -10°C to 60°C 
Storage temperature: -40°C to 85°C
Humidity: 5% to 95%(no condensation)
Appearance
Dimensions: 94.0×71.0×26.0mm(power external) 
Material: Iron(shell)  
Color: White   
Weight: 230g(power external)
Warranty: 5 years
Approvals: FCC, CE, RoHS approvals