CK1211 Series

2 port Gigabit Ethernet Media Converters/network media converter/media converter fiber/fiber network switch

Flexible 10/100/100MBaseT(X) and 10/100BaseFX ports
Extend network distances up to 120km
Compact size for easy deploying
Aluminum metal casing with IP40 protection, support high EMC level
Wide range voltage 12~48V DC power input
DIN-Rail Mounting and Wall Mounting supported
-40 to 85°C wide operating temperature range
Overview Specifications Models Resources

Overview of 2 port  Gigabit Ethernet Media Converters

CK1211 series Media Converters transparently connect 100Mbps or 1000Mbps RJ45 Copper to Gigabit SFP fiber. The network media converter/media converter fiber/fiber network switch will automatically detect if the copper port speed is 100Mbps or 1000Mbps and convert the data rate if the fiber port speed is different. Fiber to Ethernet Converters use a copper transceiver to transform the signal from a UTP/RJ45 Ethernet link to one that can be used by a fiber optic transceiver.
These media converters are used to enable connections of UTP copper-based Ethernet equipment to optical fiber cable such as multimode, single mode, or single strand fiber. The benefits include, extending Ethernet links over greater distances, protecting data from noise and interference.

Hardware adopts fanless, low power consumption, wide temperature and voltage (DC12~48V) design and has passed rigorous industrial standard tests, which can suit for the industrial scene environment with harsh requirements for EMC. This series support Auto-Negotiation and LED indicates, IP40 case, DIN35 rail or wall mounting. It can be widely used in smart city, rail transit, smart city, safety city, new energy, intelligent manufacturing and other industrial fields.


Specifications of 2 port  Gigabit Ethernet Media Converters

10/100/1000M BaseT(X) Ports 2 RJ45 connectors
Full/Half duplex mode
Auto MDI/MDI-X connection
Auto negotiation speed
10/100/1000M Base FX Ports

1 to 2 Optical ports, Optional SC/ST/FC connector

IEEE 802.3 for 10BaseT
IEEE 802.3u for 100BaseT(X) and 100BaseFX
IEEE 802.3x for flow control
Switch Properties
Processing Type: Store and Forward
MAC Table Size:  1K
Packet Buffer Size:  448Kbits
Power Supply 3 PIN Terminal Block(s)
Power Consumption (Idle) Max 2.45W @ 24 VDC
Power Consumption (Full) Max 2.64W @ 24 VDC
Input Voltage 12/24/48 VDC
Reverse Polarity Protection

      Weight: 200g

      Casing: Metal housing with IP40 protection, support high EMC level

      DIN-Rail Mounting and Wall Mounting supported


        Operating Temperature:-40℃~85℃
      Storage Temperature: -40℃~85℃
        Ambient Relative Humidity: 5%~95%(non-condensing)


    IEC61000-4-2 (ESD): Power ±2KV Contact, ±15KV Air
      Relay ±2KV Contact, ±15KV Air; Data Cable ±15KV Air
      IEC61000-4-4 (EFT):Power ±4KV, Data Cable ±4KV
      IEC61000-4-5 (Surge):Power ±2KV CM/ ±1KV DM, Relay±2KV CM/ ±1KV DM
      IEC60068-2-27 (Shock)
      IEC60068-2-32 (Free Fall)
      IEC61000-6-2 (General Industrial Standard)
Warranty 5 years

Available Models

Gigabit Copper Port

Gigabit SFP Slot

Power Supply Range




 12-48V DC




85-268V AC





  CK7220M Series Datasheet