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Kramer VS-88UT/110V 8x8 4K60 HDMI/HDBaseT PoE Matrix Switcher

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VS−88UT is an all−in−one 4K@60Hz (4:2:0) Audio−Video presentation system with integrated range extension and an integrated control system master. The unit switches the video, embeds the audio and outputs the signal to both an HDMI and an HDBaseT 2.0 with USB extension and PoE on the HDBaseT output ports. Outstanding audio support includes balanced stereo audio, unbalanced stereo audio, and de−embedded audio sources that output to embedded audio, balanced stereo audio as well as a power amplified audio output.

VS−88UT includes a master room controller that can operate over Ethernet (LAN) with control ports that include: one bidirectional RS−485, four RS−232, four IR, four GPI/O, and eight relays to control a wide variety of AV devices. It includes a KNET™ connector interface that enables access to the master controller from auxiliary room controllers such as control keypads. The unit can also provide power to auxiliary room controllers via the KNET™ connectors. VS−88UT includes an Ethernet gateway to control and manage remote I/O ports.


  • Classroom, lecture theaters and education application
  • Projection systems in conference rooms, boardrooms, hotels and churches


  • Versatile All–in–One Solution — Provides a high–performance AV presentation matrix, powerful HDBaseT signal extender and fully featured, programmable master room controller in one unit.
  • High–Performance, Professional AV Matrix — Switches 6 4K@60Hz (4:2:0) HDMI inputs and 2 HDBaseT 2.0 signals to 2 4K@60Hz (4:2:0) HDMI outputs and 2 HDBaseT 2.0 signals at up to 10.2Gbps (3.4Gbps per graphics channel) data rate. Signals are HDCP and DVI compliant with Deep Color, 3D, and 7.1 PCM. Includes active source & acceptor detection, auto–switching and auto–scanning of inputs, and a non–volatile memory that retains the last configuration, after switching the power off and then on again.
  • Flexible Audio Extraction, Embedding and Control Options — Includes 4 balanced stereo or 8 microphone audio inputs (selectable), 4 unbalanced stereo inputs, 2 line–out balanced stereo audio outputs and one audio amplified output. Features audio volume control, audio breakaway and AFV (audio–follow–video) operation support. Global mute for both video and audio outputs enables smooth integration of the audio system with a public announcement audio system in case of an emergency event.
  • Powerful HDBaseT Extender — Extends signals up to 100m at 4K @60Hz (4:2:0), up to 130m (430ft) at full HD (1080p @60Hz 36bpp), and up to 180m (590ft) at ultra mode and full HD (1080p @60Hz 24bpp). Featuring Kramer reKlocking™ and Equalization Technology that rebuilds the digital signal to travel longer distances. Note: For optimum range and performance, use recommended Kramer cables.
  • Programmable Master Room Controller — Connect multiple peripheral devices and control them using intuitive embedded web pages. Schedule actions and macros to automate device control.
  • Multi–Client IP — Simultaneous IP control communication with up to 15 IP control clients.
  • Diverse and Abundant Control Port Formats — Includes USB 1.1 & USB 2.0 (up to 127Mbps) via 2 USB type–A and 2 USB type–B ports, 6 IR Ports, 1 Ethernet port, 1 1G Ethernet port for HDBaseT tunneling, 1 K–NET™ connector; 1 RS–485 and 2 RS–232 bidirectional control ports, 4 IR emitter control ports, 4 GPI/O control ports, and 8 relay control ports.
  • IP Port Extension and Control — Ethernet port connects to control gateways for I/O port extending, and operating IP controlled devices
  • Provides Power and Control in a Single Connection — HDBaseT outputs provide PoE (Power over Ethernet) to compatible devices. K–NET™ connector carries power along with control communication to either a master room controller or auxiliary control keypad.
  • Control Volume, Sensors, Locks, and Lighting — Using 4 general–purpose (GPI/O) control ports configured as digital input, digital output or analog input interface.


    • 4 HDMI: On female HDMI connectors
    • 4 HDBT/4 HDMI (Selectable): On RJ–45/female HDMI connectors
    • 4 Unbalanced Stereo Audio: On 3.5mm mini jacks
    • 4 Balanced Stereo Audio/8 Balanced Mic (Selectable): On 5–pin/3–pin terminal block connectors
    • 4 IR: On 3.5mm mini jacks for IR tunneling via HDBaseT
    • 2 IR (room controller): On 3.5mm mini jacks
    • 6 HDMI: On female HDMI connectors
    • 2 HDBaseT: On female RJ–45 connectors
    • 2 Balanced Stereo Audio: On 5–pin terminal block connectors
    • 1 Stereo Speaker Output: On a 4–pin terminal block, 2x50W into 4Ω
    • 2 IR: On 3.5mm mini jacks for IR tunneling via HDBaseT
  • PORTS:
    • 1 RS-232: On a 3–pin terminal block for Serial Tunneling via HDBaseT
    • 1 RS-232: On a 3–pin terminal block for Device Control
    • 4 (2+2) USB: On female USB–A connectors for USB Link Extension
    • 2 USB: On female USB–B connectors for USB Link Extension
    • 1 Ethernet Control: On an RJ–45 female connector for tunnelling data via HDBT ports
    • 1 Ethernet 1G: On an RJ–45 female connector for tunnelling data via HDBT ports
    • 1 100BaseT Ethernet: On an RJ–45 female connector for Device Control and LAN Extension
    • 1 K-NET 5mm Mini-jack (room controller): On a 4–pin terminal block connector for learning
    • 1 RS-485 (room controller): On a 3–pin terminal block connector
    • 4 RS-232 Serial (room controller): On 3–pin terminal blocks
    • 8 Relays (room controller): On 2–pin terminal block connectors (36V AC or DC, 2A, 60VAC maximum on non–inductive load)
    • 4 GPI/O (room controller): On 2–pin terminal blocks
    • Up to 100m (330ft): At 4K@60Hz (4:2:0)
    • Up to 130m (430ft): At Full HD (1080p @60Hz 36bpp)
    • Up to 180m (590ft): HDBaseT Ultra Mode and Full HD (1080p @60Hz 24bpp)
    • Compliance: HDBaseT 2.0
    • Indicators: ON & STATUS LEDs
    • Configuration Switches: RS–485 Termination, RS–485 Termination, Programming
  • VIDEO:
    • Max. Resolution: 4K@60Hz (4:2:0) 24bpp resolution
    • Max. Data Rate: 10.2Gbps (3.4Gbps per graphic channel)
    • Content Protection: HDCP 1.4
    • Max Vrms Level: 1
    • THD + Noise: 0.03% @1kHz at nominal level
    • Host Compliance: 1.1 and 2.0
    • Max Extended Line Rate Bandwidth: 127Mbps (out of max 480 USB)
    • Max Devices: 7
    • Max Hubs: 2
    • Max Ports per Hub: 8
  • EXTENDED ETHERNET: Max Transmission Bandwidth: 100Mbps
  • EXTENDED RS-232: Baud Rate: 300 to 57600
  • CONTROL RS-232: Baud Rate: 115200
    • Windows 7 and Higher: Internet Explorer (32/64 bit) version 10, Firefox version 30, Chrome version 35
    • MAC: Chrome version 35, Firefox version 30, Safari version 7
    • Optimal Resolution: 1920x1080
    • Minimal Resolution: 1024 x 768d
  • POWER:
    • Source: 100–240V AC, 50/60Hz
    • Consumption: 250VA
    • Size: 19" (W), 9.3" (H), 2U, rack mountable
    • Type: Aluminum
    • Cooling: Fan ventilation
    • Operating Temperature: 0° to +40°C (32° to 104°F)
    • Storage Temperature: –40° to +70°C (–40° to 158°F)
    • Humidity: 10% to 90%, RHL non–condensing
    • Safety: CE, UL
    • Environmental: RoHs, WEEE
    • Included: Power cord
    • Optional: Recommended Kramer cables, see the CABLES tab
    • 19" x 12.05 x 2U (43.6cm x 30.60cm x 8.80cm) W, D, H
    • 19" x 7.24 x 2U (43.6cm x 18.40cm x 8.80cm) W, D, H
  • PRODUCT WEIGHT: 3.9kg (8.6lbs) approx.
  • SHIPPING DIMENSION: 52.60cm x 47.50cm x 18.40cm (20.71" x 18.70" x 7.24" ) W, D, H
  • SHIPPING WEIGHT: 5.4kg (11.8lbs) approx.

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