sono akai botan ni sawaranaide kudasai.

It is read さわらないでください.

So the full sentence is:

その あかい ボタン に さわらないで ください。

A few useful readings here:

• その = sono
• 赤い = あかい / akai
• ボタン = botan
• に = ni
• 触らないでください = さわらないでください / sawaranaide kudasai

その is a demonstrative that means that, specifically that ... near you / the listener / something already identified.

Japanese has a three-way distinction:

• この = this ... near me
• その = that ... near you / already mentioned
• あの = that ... over there, away from both of us

So その赤いボタン means that red button.

In Japanese, adjectives usually come before the noun they modify, just like in English.

• 赤いボタン = red button

赤い is an い-adjective, so it can directly modify a noun without any extra word:

• 赤い車 = red car
• 赤い本 = red book
• 赤いボタン = red button

So this part is very straightforward: 赤い simply describes ボタン.

Both その and 赤い modify ボタン, and in Japanese they both come before the noun.

The usual order is:

• その赤いボタン = that red button

A helpful way to think about it is:

• その narrows down which one
• 赤い describes what kind

So その赤いボタン sounds natural and standard.

Because the verb 触る commonly uses に for the thing being touched.

• ボタンに触る = to touch the button

This is one of those verb-particle pairings you mostly have to learn as a set.

So in this sentence:

• その赤いボタンに = that red button as the target of touching

For learners, the safest pattern to remember is:

• ～に触る = touch ~

You may sometimes encounter を in real life, but に is the standard form usually taught and the best one to use.

It breaks down like this:

• 触る = to touch
• 触らない = do not touch / not touch
• 触らないで = without touching / don’t touch
• 触らないでください = please don’t touch

This pattern is very common:

• verb nai-form + でください

It is used to make a polite request not to do something.

Examples:

• 食べないでください = please don’t eat
• 入らないでください = please don’t enter
• 触らないでください = please don’t touch

Because 触る is a う-verb and its negative form is made by changing the final う sound to the a row, then adding ない.

For 触る:

• dictionary form: 触る
• negative stem: 触ら
• negative form: 触らない

This is the normal pattern for many う-verbs:

• 書く → 書かない
• 読む → 読まない
• 待つ → 待たない
• 触る → 触らない

So 触らない is just the regular negative conjugation of 触る.

It is a polite request not to do something.

So 触らないでください is softer than a blunt command, but in context it can still feel quite firm, especially on signs, instructions, or warnings.

Compare:

• 触らないでください = please don’t touch
• 触ってはいけません = you must not touch / do not touch
• 触るな = don’t touch! (very strong, rough, direct)

So ～ないでください is polite, common, and natural in many everyday situations.

Japanese often leaves out the subject when it is obvious from context.

In English, you would usually say:

• Please don’t touch that red button.

In Japanese, the you is understood, so it is omitted:

• その赤いボタンに触らないでください。

This is extremely normal. Japanese often omits:

• the subject
• the object
• sometimes other information

if the listener can easily understand it from the situation.

If you break it down piece by piece, ないで can look like without doing, so a very literal gloss can feel like that.

But in this pattern:

• ～ないでください

the natural meaning is:

• Please don’t ~

So although the internal grammar comes from ないで, you should learn ～ないでください as a set expression for polite negative requests.

No. Standard Japanese is normally written without spaces.

So this sentence would usually be written as:

その赤いボタンに触らないでください。

Spaces are often added in teaching materials to make the structure easier for beginners to see.

Yes, it is completely natural.

It sounds like something you might see or hear:

• on a warning sign
• in a museum
• near a machine
• in an instruction from staff

It is polite, clear, and standard Japanese.