Signamax™ Multimedia Keystone Jacks

Customizable Outlet System for Fiber Optic, Audio/Video and Surveillance Applications


What's special about these keystone modules?

  • Most comprehensive line of BNC, F-Type, RCA, and Fiber Optic keystone jacks, to provide installers with a highly versatile solution for creating unique outlet systems for the home, classroom, or office environments.
  • Fully modular design allows for easy snap-in installation in most types of patch panels and multimedia wallplates with standard keystone inserts.
  • User-friendly, feed-thru modules provide quick and easy plug-n-play installation, and save a great deal of time and labor when compared to keystone jacks that require termination or soldering.
  • Click for More Features

Signamax™ Multimedia Keystone Jacks and Unloaded Patch Panels provide the perfect solution when an application requires multiple connection types. These fully modular keystone jacks simply snap into most types of standard keystone port inserts, to provide quick and user-friendly installation into patch panels, wall plates, surface mounting boxes, or structured media center.

Please Note: These products ship in 1-2 week if not in stock

Part # Description Colors Price
SX-CMK-F3 F-Type Keystone Jack, 3 GHz Light Ivory, Black, Gray, White
Quick Ship
Fiber Optic
Part # Description Colors Price
SX-CMK-ST ST Multimode/Singlemode Keystone Jack Black, Gray, White
Manufacturer Direct
SX-CMK-SC SC Multimode/Singlemode Keystone Jack Light Ivory, Black, Gray, White
Manufacturer Direct
SX-CMK-LC LC Multimode/Singlemode Keystone Jack Light Ivory, Black
Manufacturer Direct
Part # Description Colors Price
SX-CMK-BL Blank Keystone Insert (10pk) Light Ivory, Black, Gray, White
Manufacturer Direct
Unloaded Multimedia Patch Panels
Part # Description Dimensions Price
SX-24U-HDMMP 24 Port Patch Panel, 1U 1.75"H x 19"W
Manufacturer Direct
SX-48U-HDMMP 48 Port Patch Panel, 2U 3.50"H x 19"W
Quick Ship
  • Available in multiple colors to match or complement your preexisting décor and wallplates.
  • Keystone module housing is constructed from high-impact thermoplastic which meets the UL 94V-0 fire retardant rating.
  • Unloaded multimedia patch panels allow the user to build a unique cross-connection solution tailored to their specific requirements, whether it's Cat 5e, BNC, F-Type or a combination.
  • Each panel features individually numbered ports for quick and easy jack identification.
  • Standard and high-density patch panels are constructed from durable die-cast steel, and finished in a high-impact black epoxy-powder paint to provide long-lasting quality with excellent corrosion- and scratch-resistance.

    Click here to view Fiber Optic Keystone Modules Specifications

    F-Type Keystone Modules Specifications
    Transmission Performance
    CMK-F: up to 1 MHz
    CMK-F3: up to 3 MHz
    Transmission Media
    Coaxial, 75 Ohm (RG6/U, RG-58/U)
    Wire Gauge
    18–22 AWG (0.64 – 1.07 mm) solid
    Frequency range:
    CMK-F 1 GHz DC
    CMK-F3 3 GHz DC
    Impedance: 75 Ohm
    Insertion loss : < 0.3 dB at 1 GHz
    CMK-F < 0.3 dB
    CMK-F3 < 0.2 dB
    Return loss:
    CMK-F3 > 30 dB
    Contact resistance: < 4 mOhm
    Insulation resistance: min 500 MOhm at 100 Vdc
    Inductance: min 500 nH
    Capacitance: min 2 x 1.5 nF
    Operational voltage: 250 Vdc
    Test voltage: 750 Vdc for 1 min
    Peak voltage rating: 500 V
    Dielectric withstanding voltage: 1,500 Vrms
    Feed-through current: max 10 A
    Housing: high impact thermoplastic, UL94V-0 fire retardant
    Shell: brass, nickel plated
    Seizing pin:  
    CMK-F bronze alloy, tin plated
    CMK-F3 360-degree beryllium bronze, gold plated
    CMK-F low-density polyethylene (LDPE)
    CMK-F3 nylon
    Nut: iron plated with nickel over copper
    Mating cycles: min 500
    Holding force: > 160 g (initial)
    > 120 g (after insertion)
    Interface dimensions: similar to MIL-C-39012
    Housing shall support 2.2 kg force minimum applied from either direction
    Standard keystone footprint
    Mounting Dimensions
    1.18"D x 0.77"H x 0.65" W
    30.0 mm D x 19.7 mm H x 16.5 mm W
    Environmental Conditions
    Storage: -40°C – +70°C (-40°F – +158°F)
    Operation: -10°C – +60°C (+14°F – +140°F)
    RH (operation): max non-condensing 93%
    Vibration, shock, and temperature cycling in accordance with MIL-STD-1344
    ANSI/SCTE 02, IEC 60169-24, UL 94V-0
    Over-the-air terrestrial television, cable television, satellite television, cable modems
    5-year limited component warranty



    Fiber Optic Keystone Modules Specifications
    Transmission Performance
    ANSI/TIA-568-C.3: Meets or exceeds performance specifications
    Transmission Media
    Multimode (OM1, OM2, OM3) and singlemode (OS1) optical fiber with 125 μm cladding diameter
    Connector Type
    FOCIS-compliant ST, SC, MT-RJ, and LC
    Insertion loss: 0.2 dB typical
    0.4 dB maximum
    Insertion loss increase after 500 mating cycles: 0.1 dB
    Housing: High impact thermoplastic, UL94V-0 fire retardant
    Alignment sleeve: Phosphor bronze
    Alignment sleeve retention force: 200–600 gf
    Mating cycle life: min 500 cycles
    Standard keystone footprint
    Mounting Dimensions
    SC: 1.1" "D x 0.76" H x 0.67" W
    28 mm D x 19.3 mm H x 16.9 mm W
    LC: 1" D x 0.76" H x 0.67" W
    25 mm D x 19.3 mm H x 16.9 mm W
    MT-RJ: 1.1" D x H 0.76"H x 0.67" W
    28 mm D x 19.3 mm H x 16.9 mm W
    ST: 1.2"D x 0.76"H x 0.67" W
    30 mm D x 19.3 mm H x 16.9 mm W
    Environmental Conditions
    Storage temperature: -40°C – +85°C (-40°F – +185°F)
    Operating temperature: -40°C – +85°C (-40°F – +185°F)
    RH (operation): Max non-condensing 93%
    ANSI/TIA-568-C.3, FOCIS, UL 94V-0
    FOIRL, 10BASE-FL, 10BASE-FB, 10BASE-SX, Token Ring 4/16, 100VG-Any LAN, 100BASE-FX, 100BASE-SX, FDDI, ATM 52/155/622, Fibre Channel 266/1062, 1000BASE-SX, 1000BASE-LX, 10GBASE-S, 10GBASE-L, 10GBASE-E, 10GBASE-LX4
    5-year limited component warranty
    10-year Signamax Link/Channel Warranty
    15-year Signamax Extended Component Warranty
    25-year Signamax Cabling System Warranty


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