DF-155M-4P-E    10/100M single mode 4 port poe ethernet switch single fiber, SC20KM

1.Overviews

DF- 155M-4P-E is specialized unmanaged POE switch designed for video surveillance and network project system, etc. It provides 4 x 100Mbps Ethernet ports and 1x 100Mbps uplink ports, support VLAN function, can effectively prevent whole system from broadcast storm so that make the data transfer safer.
This POE network switch can meet customer's general demands. POE network switch with POE function, designed for high-definition network camera's internet access. It provides 4 100Mbps PoE Ethernet switches, complies with IEEE802.3af/at standards, and also simplifies wiring, avoids the troublesome of installing power socket for powered devices.

2.Features

1.Provide 4 x 100Mbps Ethernet ports, 1 x 100Mbps up-link ports;
2.Support End-Span method complies with IEEE802.3 af/at standards, can supply max 30W power which is possible to power high-power infrared cameras;
3.Comply with IEEE802.3, IEEE802.3u, IEEE802.3af/at standards;
4.Support IEEE802.3x full-duplex flow control, support Auto MDI/MDIX  Support port-base Vlan, prevent from broadcast storm so that make data conversion more efficient and safe;
5.Various LED display functions can real-timely display the device's current working conditions, and help prompt facility and remove trouble easily;
6.Excellent lightning protection, lightning capacity up to 2KV;
7.Easy to install and operate on walls or on the desktops;

3.Technical Specifications


Note:
If any changes with product specification, forgive without prior notice.
As transmission distance has certain relation with the cable, so you are suggested to use standard cat5e/6 cable for longest distance needed.

Here I'm willing to show you more information regarding our POE switch.
1.The chips we always use for POE switch are Broadcom and Marvell.
2.In the backside of our POE switch, there is a switch(named default and CCTV switch) can adjust the transmitter distance between POE IP camera and POE switch, pls kindly note the max transmitter distance we can reach is 250m.



3.All our POE switchws are intelligent, therefore it can supply enough worked power for all equipments that POE switch connects with according to the equipments' need.  So the customers do not need to worry the equipments will burnout when POE switches supply big power much more than what they need, or the equipments can not work well if POE switches do not supply enough power to them.
4.All our POE switchws are compatible with IEEE802.3 af/at standards.

4.V-lan

4.1 Introduction

   When V-lan function is opened, the LAN port can't make data conversion but can only communicate via uplink port. The V-LAN workstation is built separately between every network port and UP-LINK port.
In the same V-lan workstation, no matter which actual PoE switch being connected, the signal transmission are separately isolated from each other which seems they are on the different switches. The broadcast in the same V-lan can only be received by the members but can't be transmitted into other V-lan, which can greatly control unnecessary broadcast storm. What's more, different V-lan can't even communicate with each other when there is no routing, which increases the safe degree among different department in the enterprise.

4.2 Configuration

  Toggle the V-lan button on the back of the switch to ON state, V-lan indicator lights, then press the reset button to restart the switch, in this way V-lan functions.
Note:

  Please press reset button or repower the device when turn on V-lan, only in this way the switch can enter corresponding mode.

5.Installation

Packing List
Before installation, please check the following equipment and