ありがとうございます。

Thank you very much.
Of the DELL monitors sold in many countries, it is fine to use the current touch screen P2418HT, but the 23.8 inches are large.

There is a possibility only in the Japanese market, but I-O Data products may also be used
LCD-MF224FDB-T
https://www.iodata.jp/product/lcd/tp/lcd-mf224fdb-t/index.htm

P2418HTに関して少なくとも1人のユーザーからの矛盾する報告があります。

ソース：https://yamahasynth.com/ask-a-question/dell-p2418ht-touch-screen-monitor-with-the-montage
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「モンタージュでDell P2418HTタッチスクリーンモニタを使用したことがある人はいますか？デルの画面にはモンタージュ画面からの情報が表示され、タッチに応答します。つまり、Dellはモンタージュ画面に合わせて調整していません調整ルーチンを試してみました（「Part Common」 「Utility」 「Enter」を押し続けます）。キャリブレーション用の四角形がDellの画面に表示されますが、タッチに反応しません。

何かご意見は？モンタージュのタッチスクリーンは私の昔の目には小さすぎる。」

There are conflicting reports from at least one user about the P2418HT.

Source: https://yamahasynth.com/ask-a-question/dell-p2418ht-touch-screen-monitor-with-the-montage
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"Has anyone had any experience with using the Dell P2418HT Touch Screen monitor with the Montage? The Dell screen displays the info from the Montage screen and responds to touch. The issue is that on the Dell, when I touch a Live Set preset, for example, it selects a different preset. In other words, the Dell isn't calibrated to the Montage screen. I've tried the calibration routine (press and hold "Part Common" " Utility" "Enter"). The white squares for calibration show up on the Dell screen but do not respond to touch.

Any thoughts? The Montage's touchscreen is too small for my old eyes."

大変失礼しました。Dell P2418HTはMONTAGEのタッチ機能と互換性がないのですね。

I'm sorry.
The touch screen of Dell P2418HT is not compatible with touch. Sincerest apologies. It would be nice if there were touch screens available that could be purchased in many countries' markets, but that seems difficult.
I tried a Chinese-made cocopar monitor available on Amazon, etc., but the touch screen function did not work.
There are places where I would like to continue trying, but my wallet is cold. ;)