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  Pelco PEL-CX82051MSTR2 Unmanaged Ethernet Switch

Pelco PEL-CX82051MSTR2 Unmanaged Ethernet Switch


Our Price : $598.68

Product Code: PEL-CX82051MSTR2


The CX82051MSTR-2 Unmanaged Ethernet Switch from Pelco is an unmanaged Ethernet switch that provides (5) 10Base-T/100Base-TX ports and (1) 100Base-FX port that accepts two fibers. This model uses ST fiber connectors over multi-mode fiber and is capable of transmission distances up to 3.7 miles (6km).

Two fibers are required to transport bidirectional data over the fiber port. The fiber port on the switch is forced to full-duplex 100Mbps operation. Networking functions for each of the five 10Base-T/100Base-TX ports (RJ-45 twisted-pair copper ports) are user-selectable by means of a rotary switch. Autonegotiation allows a 10Base-T/100Base-TX port to automatically negotiate between 10Mbps and 100Mbps data rates and between full-duplex and half-duplex modes. If autonegotiation is not desired, a port can be forced to specific modes of operation: 10 Mbps or 100 Mbps data rate, half-duplex or full-duplex mode, and enabling/disabling of flow control.

The auto MDI/MDI-X feature allows each RJ-45 port to connect to either a straight-through or crossover RJ-45 cable. The unit's modular design makes it well suited for standalone or rackmount use. A rackmount kit and other accessories are separately available.

This solution uses ST fiber connectors over multi-mode fiber and is capable of transmission distances up to 3.7 miles (6km)
This model differs from the "FX" version of the product in its conformal coating, which is required for operation in environments with relative humidity above 95% (condensing)
This device is an unmanaged Ethernet switch designed for the transport of bidirectional Ethernet data with (5) 10Base-T/100Base-TX ports and (1) 100Base-FX port that accepts two fibers
It is designed for use in point-to-point applications

User-selectable networking functions are available for each 10Base-T/100Base-TX port:

Autonegotiation between 10Mbps and 100Mbps data rates and between full-duplex and half-duplex modes
10Mbps or 100Mbps selectable
Full-duplex or half-duplex selectable
Enabling/disabling of flow control
It features auto MDI/MDI-X (Medium Dependent Interface/Medium Dependent Interface Crossover) operation
The solution is compliant with IEEE 802.3, 802.3u, and 802.3x standards
It uses laser diodes for transmission of optical signals
This solution is designed to meet NEMA TS 2 and Caltrans Traffic Signal ControlEquipment environmental standards
No performance adjustments are required
It uses a 12VDC or 24VAC power supply
Its modular design allows for standalone or rackmount use
LED lights provide a visual indicator for multiple states of operation



Fiber Type: single-mode (62.5/125 um)
Fiber Optic Connector Type: ST
Number of Fibers: 2
Wavelength (Transmit/Receive):
Fiber Port A: 1310/1310nm
Fiber Port B: 1310/1310nm
Optical Power Budget: 28dB
Maximum Transmission Distance: 3.7 miles (6km)


Switch Type: Unmanaged Layer 2
Switch Method: Store and forward
Switch Fabric: Non-head-of-line blocking
Data Rate: 10/100Mbps
Compliance: IEEE 802.3, 802.3u, 802.3x
Interface: Auto MDI/MDI-X
Operating Mode: Half-duplex or full-duplex
Address Table Size: 1,024 MAC address entries with automatic learning and aging
Quality of Service: IEEE 802.1p priority, tag-based, 4 queues per port, weighted fair queuing scheduling
Maximum Frame Size:
Untagged Ethernet frames up to 1,518 bytes
Tagged Ethernet frames up to 1,522 bytes


Rack Power/Alarm: 1, 4-pin connector
Stand-Alone Power: 1, 2-pin connector, screw terminal
Electrical: 5, RJ-45, 10Base-T/100Base-TX
Fiber Optic: 1, dual-fiber ST


100Base-FX Port Status (link/activity, FEFI)
Optic Fault (optic signal/laser status)
10Base-T/100Base-TX Port Status (link/activity and speed, duplex/collision and speed)


CE, Class A
UL Listed
UL Listed to Canadian safety standards
FCC, Class A
Complies with FDA requirements for Class 1 laser products
Designed to meet NEMA TS 2 and Caltrans traffic signal controlequipment standards for ambient operating temperature, mechanicalshock and vibration, humidity with condensation, high-line/low-line voltage conditions, and transient voltage protection (certification pending)

Power: Input Power: 12VDC or 24VAC, 0.5A
Dimensions (HxWxD): 4.81 x 2.28 x 8.75" (12.22 x 5.79 x 22.23cm)


Unit weight: 2.4 lbs (1.09kg)
Shipping weight: 4 lbs (1.81kg)
  • Point-to-Point Applications
  • Conformal Coating
  • ST Fiber Connector
  • Multi-Mode Fiber (62.5/125um)
  • 1310/1310nm Wavelength
  • 26dB Optical Power Budget
  • Transmission Up to 3.7 miles (46km)
  • Bidirectional Data
  • Standalone or Rackmount

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