Dual monitors with IF system question

[GUMBY GCF]

would this work the same as a daul monitor card for the IF software set up with two monitors?

https://www.cablesforless.com/p-522-2-way-vga-multiplieramplifier.aspx
Product: 2-Way VGA Multiplier/Amplifier
SKU Price Quantity In Stock Order
069-111 Price: $39.99 24 Quantity:

Description
This high-resolution monitor splitter allows users to connect 2 SVGA monitors to one Video input ( such as a pc. ) up to 210 feet away. Enhanced video capabilities let you boost crisp, clear video up to 2048 X 1536 on each monitor. Perfect for trade shows, classrooms and presentations. Shielded metal housing protects against EMI/RFI interference.

Features:

* FCC Class A and CE emissions compliant
* Gain switch selects near or far distances
* Power Adapter UL, TUV, or SAA rated
* Package includes : multiplier, power adapter, and user manual.

NOTE: When using some LCD type monitors you may experience display issues when using lower refresh rates. This is easily fixed by tuning the refresh rate of your computer or sending devices to a higher level.

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[Cliff Wilson]

In most cases a dual monitor setup "Enlarges" your desktop and gives you more screen geography. So, you can do things like have the finished display on the monitor the customer sees and the application where you do your work on the monitor only you see.

With a splitter, both monitors are identical.

It would work. The customer would just see everything you do.