Industrial Unmanaged Gigabit PoE Switch

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Industrial Unmanaged Gigabit PoE Switch  LK8004P2C2F


Product Description:

LINKOH  LK8004P2C2F is the unmanaged industrial grade PoE media converter with 2-port 10/ 100/ 1000-T PoE and 2-port 100/1000Base-X fiber optical interfaces.It complies with IEEE802.3af,IEEE802.3at standard PoE protocol,the Max power consumption can reach 30W (PoE+) per port.Moreover,it is featuring with fiber redundant,fiber ports 100/1000M selection,250m long distance transmission mode and PoE watchdog function,which all can be configured by the Dip switch on the top panel.


u 2*10/ 100/ 1000Base-T RJ45 PoE ports, 2*100/ 1000Base-X SFP ports

u DC 44~57V input, redundant power supply with polarity reverse/over-voltage protection

u Complies with IEEE802.3af PoE and IEEE802.3at PoE+ standard

u Powerful Dip switch function:

1.Fiber redundant;              2. Fiber ports 100/ 1000M selection;

3.250m long distance;         4. PoE watchdog

u Support 10K Bytes Jumbo frame and 1M large buffer

u Support 4KV surge protection and ESD: Air- 15kV, Contact-8kV Protection

u IP40 fan-less and Din-rail hardware design with compact size (30*85*85mm)

u Operation temperature: -40 ℃ ~+75℃

Hardware Specification

Model No. LK8004P2C2F


Fiber ports Copper RJ45 ports
2 2
Ethernet 2*10/ 100/ 1000Base-T PoE

2* 100/ 1000Base-X SFP





IEEE 802.3 10Base-T Ethernet

IEEE 802.3u Fast Ethernet

IEEE 802.3ab Gigabit Ethernet

IEEE 802.3x Full-Duplex Flow Control

IEEE 802.3az Energy Efficient Ethernet

IEEE 802.3af Power-Over-Ethernet

IEEE 802.3at Power Over Ethernet plus PSE


Dip Switch

1.  Fiber redundant

2.  Fiber port 100/ 1000M selection

3.  250m long distance mode(1-2 ports)

4.  PoE watchdog












LED Indicators


P(Power indicator) Green

Off: the device is power off or failed
On: the device power on is normal


S(PoE usage indicator) Red

Off: total PoE usage  <rated 50%
Blinking: rated 50%<total PoE usage<rated 90%
On: total PoE usage≥rated 90%



1-2(Copper ports)

Green indicators Yellow indicators
Off: ports link down Off: PoE not working
On: ports link up  

On: PoE working

Blinking: data on TX/ RX


3-4 ( Fiber ports) Green

Off: ports link down
On: ports link up
Blinking: data on TX/ RX
Power parameters
Input voltage 44-57VDC, redundant power input
Input current 1.5A Max
Total power consumption Full loading without PoE ≤ 3W

PoE power budget ≤60W

Connector Removable 4-pin terminal block
Reverse                     polarity


Over-voltage protection Support
Switching features
Switching capacity 8G
Packet forwarding rate 11.9 Mpps
MAC address table 8K
Buffer 1M
Forwarding delay <5us
Jumbo Frame Support 10Kbytes
MDX/ MIDX Support
Watchdog Support
Network Topology
Star topology Support
Bus topology Support
Tree Topology Support
Mechanical structure
Case protection IP40
Installation method Din-rail
Dimension(W*D* H)mm 30*85*85mm
Weight 0.22 kg
Operating environment
Operating temperature -40℃~+75℃
Storage/transportation temperature -40℃~+85℃
Relative humidity 5%~95%( non-condensing)



Industrial Standard

Surge protection of power: IEC 61000-4-5    Level 3 (4KV/2KV)( 8/20us)
Surge  protection  of   Ethernet  ports:   IEC  61000-4-5        Level  3  (4KV/2KV )


DIP: IEC 61000-4- 11     Level 3( 10V)
ESD: IEC 61000-4-2     Level 4( 8K/ 15K)
Shock: IEC 60068-2-27
Free fall: IEC 60068-2-32
Vibration: IEC 60068-2-6
Certification CCC/CE/ FCC/ RoHS
Warranty 3 years

Structure diagram

Ordering Information:

Product Model: LK8004P2C2F

Product Description: 10/ 100/ 1000Base-T to 1000Base-X unmanaged compact industrial PoE

media converter with 2*10/ 100/ 1000Base-T PoE ports and 2* 100/ 1000Base-X SFP slots,

complies with IEEE802.3af, IEEE802.3at standard, DC44-57V, redundant dual power supply,

Din-rail installation. Fiber port transmission distance depending on the SFP module;     Operation

temperature: -40℃~+75℃

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