Milestone Electronics
Model: ML-21HDMI
2 In 1 Out HDMI Switch with EDID Management
The ML-21HDMI is a compact HDMI switching solution designed for environments where two HDMI source devices need to be connected to a single display with stable signal performance and controlled resolution output.
- 2 HDMI inputs and 1 HDMI output for simple source management
- Built-in EDID management supporting 720P and 1080P resolutions
- Stable signal transmission with minimised screen flicker and interruptions
- Plug-and-play installation with no software or configuration required
- Compact form factor suitable for AV cabinets, desks, and display environments
2
1
Max Resolution
1080p Full HD
Audio Input
Stereo Analogue
Output
Single HDMI
- In-house manufactured
- 24hr response
- 2,000+ clients served
Product Overview
What makes the ML-21HDMI
The ML-21HDMI features two HDMI input ports and one HDMI output port, allowing users to connect multiple HDMI devices such as laptops, media players, set-top boxes, Blu-ray players, gaming consoles, or surveillance systems to a single display device like a monitor, television, or projector.
Instead of repeatedly plugging and unplugging cables, users can switch between connected devices using the built-in switching function. This improves convenience and reduces wear on HDMI ports and cables. The device integrates smoothly into existing AV infrastructures and can be used alongside HDMI extenders, signal processors, or automation systems.
The ML-21HDMI includes built-in EDID management with predefined configurations for 720P and 1080P. By controlling EDID information, the switch ensures that connected devices output the correct resolution regardless of the display’s native EDID profile. This is particularly useful in professional installations where HDMI signals are distributed through multiple devices or extended over long cable runs.
Its compact size allows it to be placed conveniently near display systems, within AV cabinets, or on workstation desks, making it a practical and unobtrusive addition to any AV setup.
HDMI Inputs
2
HDMI Outputs
1
Resolutions Supported
EDID Management
Switching Method
Installation
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Key Features
Built for reliable HDMI source management
Two inputs, one output, built-in EDID control. A focused switching solution for professional display environments.
720P and 1080P Resolution Support
The ML-21HDMI supports widely used HDMI video resolutions, ensuring compatibility with both older and modern display devices across a variety of AV environments.
- 720P HD Resolution
- 1080P Full HD Resolution
- Standard HDMI compatible formats
Built-in EDID Management
Extended Display Identification Data (EDID) management is built into the switch with predefined configurations for 720P and 1080P, ensuring source devices always output the correct resolution regardless of the display's native EDID profile.
- Predefined EDID profiles for 720P and 1080P
- Prevents resolution mismatches and signal errors
- Useful in multi-device and extended cable installations
Manual Source Switching
Users can easily switch between the two connected HDMI sources using the device's built-in switching control, making it convenient to alternate between devices such as a laptop and media player during presentations or meetings.
- Simple manual switching between two HDMI inputs
- No complex configuration or system setup required
- Instant connectivity between different HDMI sources
Stable Signal Transmission
The device is engineered to maintain consistent signal quality when switching between HDMI sources, minimising screen flicker, preventing signal interruptions, and ensuring reliable display performance.
- Minimises screen flicker during source switching
- Prevents signal interruptions between inputs
- Reliable performance across connected AV equipment
Compact and Easy Installation
The ML-21HDMI is designed for quick and simple installation. Its compact size allows it to be placed conveniently near display systems, within AV cabinets, or on workstation desks without occupying significant space.
- Compact form factor for flexible placement
- Fits within AV cabinets, desks, and rack environments
- Integrates with HDMI extenders and signal processors
Broad Device Compatibility
The switch supports a wide range of HDMI source devices and display equipment, making it a versatile connectivity solution for diverse professional AV installations and workstation setups.
- Compatible with laptops, media players, set-top boxes, Blu-ray players
- Supports gaming consoles and surveillance systems as sources
- Works with monitors, televisions, and projectors as displays
Installation
Simple plug-and-play setup
The ML-21HDMI requires no software or configuration. Connect two HDMI source devices and one display, then use the switching control to select the active input.
01
Connect HDMI Sources
Connect up to two HDMI source devices, such as a laptop and a media player, to the two HDMI input ports on the ML-21HDMI. No drivers or software installation is required. The device is ready for use immediately upon connection.
02
Connect to Display and Switch
Connect the single HDMI output port to the target display device, such as a monitor, television, or projector. Use the built-in switching control to select which connected source is active. The built-in EDID management ensures the correct resolution is automatically communicated to the source.
Where the ML-21HDMI performs
A focused switching solution for environments where multiple HDMI devices must share a single display without the inconvenience of cable reconnection.
Meeting Rooms
Switch between two presentation devices such as laptops or media players connected to a single room display. Enables seamless transitions between presenters without cable changes.
Home Office and Workstations
Connect multiple computing devices to a single monitor without constantly reconnecting cables. Ideal for users who operate two systems from one desk and display setup.
Digital Signage Systems
Manage multiple content sources connected to one display screen. The ML-21HDMI allows operators to switch between content players or controllers sharing a single signage display.
Training and Educational Environments
Allow instructors to easily switch between teaching devices during sessions. Connects a primary teaching computer and a secondary source such as a document camera or media player to one classroom display.
Surveillance and Monitoring Setups
Connect two surveillance system outputs or monitoring computers to a single display for periodic review. Suitable for small security stations or back-office monitoring positions.
AV Demonstration and Showrooms
Switch between two HDMI source devices when demonstrating products or content on a showroom display. Eliminates manual cable changes during live demonstrations or product presentations.
Full specification sheet
- Video Specifications
- Ports and Connectivity
2
1
- EDID Management
- Switching
None
- Physical and Installation
- Suitable Environments
FAQs about the ML-21HDMI 2 IN 1 OUT HDMI, with EDID for 720P, 1080P
What is the purpose of the ML-21HDMI switch?
The ML-21HDMI allows two HDMI source devices to be connected to one display and enables users to switch between them without reconnecting cables. This improves convenience, reduces wear on HDMI ports and cables, and simplifies source management in professional and workstation environments.
Which video resolutions are supported?
The device supports common HDMI resolutions including 720P, 1080P, and standard HDMI-compatible video formats. This flexibility allows the switch to function across a wide variety of AV environments where different devices may operate at different resolution levels.
How does EDID management help in HDMI installations?
EDID management ensures the source device outputs the correct resolution by controlling how the display capabilities are communicated, preventing signal and resolution issues. This is particularly useful in professional installations where HDMI signals are distributed through multiple devices or extended over long cable runs where the display’s native EDID may not be correctly received by the source.
Is any software or configuration required to use this switch?
No software or configuration is required. The device operates through simple plug-and-play installation. Connect the HDMI source devices to the input ports and the display to the output port, then use the switching control to select the active source.
Where can the ML-21HDMI be typically used?
It is ideal for meeting rooms, workstations, training environments, and digital signage setups where multiple HDMI devices share one display. It is also suited for AV demonstration environments, surveillance monitoring positions, and any professional setup where two HDMI sources need to be connected to a single display.
What types of HDMI source devices can be connected to the ML-21HDMI?
The ML-21HDMI is compatible with a wide range of HDMI source devices including laptops, media players, set-top boxes, Blu-ray players, gaming consoles, and surveillance systems. On the output side, it supports monitors, televisions, and projectors as display devices.
Can the ML-21HDMI be used alongside other AV equipment such as HDMI extenders?
Yes. The ML-21HDMI integrates smoothly into existing AV infrastructures and can be used alongside HDMI extenders, signal processors, or automation systems. The built-in EDID management makes it particularly well suited for installations where the switch is part of a larger signal distribution chain.
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