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2 way switch

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I found the following schema on the internet and reproduced it for 2 way switch but Shelly Dimmer 2 appears offline. The lights on/off on both manual switches (with a reduced brightness). What do I miss, is the schema correct?


Edited by Alexandre DUVAL
precise shell product
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The circuit diagram is correct. But you’re using in this scheme the Shelly Dimmer2 without neutral wire. Thus, the load (lamp) must have a minimum of 20 W. If not, you must use a Shelly Bypass in parallel to the lamp.

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