Need RBE opposite

looking for a node that does the opposite as
RBE. I am looking for a node that will only pass if the last two messages are the same.
Does anyone Know of any such NODE?

If just comparing a simple payload then the switch node can do a compare with previous value.

How do i Maintain the previous message?

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If using the switch would do you then you don't need to...
If you want to write your own function then see the storing data section here - Writing Functions : Node-RED

what node is that?

got it i will check it out thanks!

The switch node…

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