Milestone Electronics
Model: ML 402
4 CPU to 2 Output VGA Signal Switching System
The ML 402 VGA Switcher connects up to four computers or laptops to two display outputs, enabling centralised signal management with manual, automatic, and scan-based switching modes for professional AV environments.
- 4 VGA input ports for simultaneous connection of multiple computers or laptops
- 2 VGA output ports for dual display distribution with gain-controlled signal quality
- Manual, auto, and scan switching modes for flexible operation
- RS232 interface for integration with AV control systems
- Signal transmission up to 30 metres with stable and clear video output
Max Resolution
1080p Full HD
Audio Input
Stereo Analogue
Output
Single HDMI
- In-house manufactured
- 24hr response
- 2,000+ clients served
Product Overview
4x2 VGA Signal Switching System
The ML 402 VGA Switcher features four VGA input ports and two VGA output ports, enabling users to connect multiple computers or laptops and display any selected input on connected monitors or projectors. It supports simultaneous dual output, allowing the same source to be displayed on two screens at once.
The device supports various control methods including manual selection via front panel keypad, remote keypad operation, remote contact closure, and RS232 serial interface. An optional RS422/RS485 interface is also available, making the switcher adaptable to a wide range of AV control and automation setups.
With integrated signal management and gain-controlled output, the ML 402 ensures consistent and stable display quality across both outputs. It is fully compatible with VGA, SVGA, and EVGA display standards and supports signal transmission up to 30 metres without distortion.
The device is built with a durable metal enclosure suited for long-term use in professional environments. Its compact tabletop form factor allows placement in AV racks, control rooms, or desk setups. LED indicators provide clear visibility of active channels and power status at all times.
VGA Inputs
Need a quote?
Our team responds within 24 hours with a tailored quote for your project or bulk order.
Key Features
Built for reliable multi-source VGA management
Four inputs. Two outputs. Three switching modes. One compact device for centralised VGA signal distribution.
4 VGA Inputs and 2 VGA Outputs
Connect up to four computers or laptops simultaneously and route the selected source to two displays at once. This reduces the need for multiple display units while centralising source management.
- Supports 4 CPU or laptop VGA inputs
- 2 VGA output ports for dual display setup
- Both outputs deliver stable and clear video signals
Multiple Switching Modes
The ML 402 supports three distinct operation modes for different usage scenarios, giving operators full control over how input sources are selected and displayed.
- Manual mode for direct channel selection via front panel keypad
- Auto mode detects active signals and prioritises lower-numbered channels
- Scan mode cycles through inputs at fixed intervals for monitoring
Flexible Control Options
Multiple control interfaces ensure the device integrates easily into both manual AV setups and automated control systems, reducing dependency on physical access to the unit.
- Front panel keypad for direct channel selection
- Optional remote keypad and remote contact closure support
- RS232 interface for system integration and automation
- Optional RS422/RS485 interface available
Stable Signal Performance and Build Quality
Gain-controlled VGA output ensures consistent viewing quality across both displays. The durable metal enclosure and LED indicators support reliable, long-term operation in professional environments.
- Signal transmission up to 30 metres without distortion
- Compatible with VGA, SVGA, and EVGA standards
- LED indicators for active channel and power status
- Durable metal enclosure for professional use
Plug-and-Play Setup
The ML 402 does not require complex configuration to begin operation. Simply connect input and output devices to get started, with no specialist tools or software needed for basic use.
- No complex configuration required for initial setup
- Compatible with standard VGA-enabled systems
- Compact tabletop design for easy AV rack or desk placement
AV System Integration
The RS232 interface and optional RS422/RS485 support allow the ML 402 to be integrated into larger AV systems, enabling centralised control and automation from external control processors or management platforms.
- RS232 for integration with AV control systems
- Remote contact closure for non-serial automation setups
- Suitable for both manual and automated AV environments
Installation
Simple setup, flexible control
The ML 402 VGA Switcher is designed for straightforward installation and can be integrated into basic AV setups or larger automated control environments using its built-in interfaces.
01
Basic Plug-and-Play Setup
Connect up to four VGA source devices (computers or laptops) to the four input ports. Connect one or two monitors or projectors to the VGA output ports. Power on the device using the 230V AC supply. Use the front panel keypad to select the desired input channel. No software or complex configuration is required for initial operation.
02
AV System Integration via RS232
For installations requiring centralised control, connect the RS232 interface to an AV control processor or automation system. An optional RS422/RS485 interface is also available. Remote keypad and remote contact closure inputs allow switching control without physical access to the unit, making this setup ideal for control rooms and managed AV environments.
Where the ML 402 VGA Switcher performs
Designed for environments requiring centralised multi-source VGA management with stable signal distribution across dual displays.
Conference Rooms
Switch between multiple presentation sources from different laptops or computers and display the selected source across dual screens simultaneously for larger meeting room setups.
Educational Institutions
Enable multiple teaching systems to share content across classroom displays. The scan and auto modes allow instructors to cycle through connected sources without manual intervention.
Control Rooms
Monitor and switch between multiple VGA systems efficiently from a centralised operator station. Auto and scan modes enable continuous monitoring of connected sources without manual switching.
Commercial AV Setups
Suitable for environments requiring flexible multi-source display management, such as retail digital signage, showroom demonstrations, or commercial presentation systems with multiple active sources.
Broadcast and Production Environments
Manage VGA signal feeds from multiple production workstations and route selected outputs to monitoring displays. RS232 integration allows the switcher to be controlled by broadcast automation systems.
Training and Simulation Centres
Route VGA signals from multiple trainer or simulation workstations to shared display units. The dual output capability ensures both the instructor and trainee screens remain synchronised with the selected source.
Full specification sheet
- Signal Specifications
- Switching and Control
- Operation Modes
- Build and Electrical
- Suitable Environments
FAQs about the ML 402 VGA Switcher
What does the ML 402 VGA Switcher do?
The ML 402 VGA Switcher allows you to connect up to 4 computers or laptops and display any one of them on two screens. It helps you switch between systems easily without unplugging cables, and supports simultaneous output to both connected displays.
Can I display the same VGA output on two screens at once?
Yes, the ML 402 VGA Switcher supports dual output, so you can show the selected input on both displays at the same time. This is useful in classrooms, presentations, or monitoring setups where multiple viewers need to see the same source.
How do I switch between different VGA inputs?
You can switch inputs using the front panel keypad for direct manual control, through an optional remote keypad or remote contact closure, or via RS232 interface for automated AV system integration. The device also offers auto and scan modes for automatic switching based on your setup requirements.
What is the difference between manual, auto, and scan modes?
Yes, it is built with a durable metal enclosure and provides stable signal transmission up to 30 metres. Gain-controlled output ensures consistent display quality across both connected monitors or projectors, making it suitable for control rooms, classrooms, and professional AV environments requiring dependable operation.
Is the ML 402 VGA Switcher reliable for professional use?
Yes. The ML-VGAA HD1 also supports VGA to DVI conversion when integrated into compatible AV setups. This provides additional flexibility for AV professionals managing mixed signal environments where both HDMI and DVI displays are part of the same infrastructure.
What display standards are compatible with the ML 402?
The ML 402 VGA Switcher is fully compatible with VGA, SVGA, and EVGA display standards, ensuring broad compatibility with a wide range of monitors and projectors commonly used in professional AV setups, conference rooms, and educational institutions.
Can the ML 402 be integrated into a larger AV control system?
Yes. The RS232 interface allows the ML 402 to be integrated into larger AV systems for centralised control and automation. An optional RS422/RS485 interface is also available for installations that require these serial communication standards. Remote contact closure support further extends compatibility with non-serial automation setups.
Products you may also need
The ML 404 VGA Switcher connects four VGA input sources to four output displays,...
The ML 802 VGA Switcher connects up to eight computers or laptops and distributes...