HDMI extender transmitter TST HDMI-EX-120/TX-V4

TST HDMI-EX-120/TX-V4 is an HDMI extender transmitter designed to send uncompressed HDMI video and audio from a source device to a separate receiver over longer distances. The unit operates as the transmitting half of an extender system, enabling distribution of HDMI signals to remote displays, projectors or video walls where direct HDMI cabling is impractical. It is suitable for installations that separate source equipment from presentation or signage locations.

Advantages

The transmitter supports stable HDMI signal transmission with focus on preserving video and audio quality across the extender link. Its compact form factor simplifies integration into AV racks or equipment cabinets, and standard HDMI interfaces provide compatibility with a wide range of source devices. The design reduces the need for repeated signal conversions and allows centralized placement of source equipment while delivering content to remote screens.

Suitable for

• Digital signage systems in retail, hospitality and public spaces
• Conference rooms and meeting facilities with remote displays or projectors
• Corporate AV installations and control rooms
• Educational environments where source and displays are separated

Key specifications

• Role: HDMI transmitter unit for an extender system
• Interface: HDMI input for source connection
• Signal support: HDMI video and embedded audio transmission
• Mounting: compact enclosure suitable for rack, shelf or cabinet placement
• Compatibility: works with standard HDMI sources and compatible receiver units within the extender family

How to use

Connect the HDMI source (computer, media player, set-top box or other device) to the HDMI input on the transmitter using a standard HDMI cable. Install the transmitter in a stable location near the source or in an AV cabinet, provide power according to the system requirements and link the transmitter to the corresponding receiver using the extender’s transmission medium (as specified by the extender system). Once connected, ensure the receiver and display are powered and configured to the correct input. Verify video resolution and audio settings on the source device to match display capabilities.

Usage recommendations

For reliable operation, use quality HDMI cables and follow manufacturer guidance for maximum transmission distance and compatible receiver models. Place the transmitter away from strong electromagnetic interference and ensure adequate ventilation around the unit. When used in professional AV setups, test the end-to-end signal chain before final installation and confirm resolution and audio format compatibility between source and display.