Different makers sign their switches up in diffreent ways. I know, its a pain.
Here's how to convert
Old switch COM = New Switch L1
Old switch L1 = New Switch L2
Old switch L2 = New Switch L3
See, electrics stuff isn't as simple as it looks!

Here's how to convert
Old switch COM = New Switch L1
Old switch L1 = New Switch L2
Old switch L2 = New Switch L3
See, electrics stuff isn't as simple as it looks!