RS-232 optic modem converts the electrical signal into optical signal for transmission over fiber optic cable. It not only resolves the contradiction between communication distance and communication data rate, but also resolves the difficulties of electromagnetism molestation, geographical surroundings molestation and so on, which greatly improves the reliability and security of the data communication.  

Features
• frame format: unframe
• Bit rate auto-negotiation
• Indicators: PWR, TX, RX, FXL
• Industry standard design and metal shell
• Connector: DB9/ ST, SC, FC are selectable
• RS-232 interface: TX, RX, GND
• the connection between MOD-232 and MOD-485/422 can realize to conversion of RS-232 and RS-485/422

Specifications
• RS-232 interface: DB9 hole, TX, RX, GND tri-ring RS-232 interface
• ST, SC, FC optic port are selectable
• Power: DC5V + power adapter
• Current: <300mA
• Data rate: 0~115.2Kbps auto-negotiation
• Fiber: SM 9/125µm (MM 62.5/125µm or 50/125µm)
• Wavelength: 1310nm (850nm)
• Transmitting power: -8.5dbm(-15dbm)
• Receiving sensitivity: -38dbm(-32dbm)
• Distance: 2, 5, 20, 40, 100km
• Rate of fault code: <=10-9
• Operating temperature: -45° ~ 85°
• Humidity: 5%~95% (non condensation)
• Size: 90mm×70mm×30mm
• Weight: 0.5kg