Make roller shutters smart

[dark pulsar]

Can someone tell me what tools I need to install And how times l "doubled"

[light root]

if you are unsure then consulting an electrician may be the best solution...

however... what is your actual goal here?
are you replacing the old setup with zigbee only?
are you replacing old setup with zigbee and new switch?
are you wanting your old setup but also have zigbee module inccluded?

[dark pulsar]

I want to keep the old one and add a Zigbee controller

[light root]

ok so i havent seen your actual wiring setup so i caannot be entirily sure but it looks like you wire like this

so the old unit becomes 2 switches which input into the relay. and the relay then drives the shutters

[dark pulsar]

Yes and how can i Split cabel N and L

[light root]

honestly if your asking that kind of question.... you should not be doing this work. it is dangerous and you can damage other things if you do it incorrectly