I have 3 DS-KV8413-WME1C Doorbell Intercom units connected together for 4 apartments in my building. The two units work fine unlocking the door strike at the gates when the unlock button is pressed. The main unit at the front gate once connected to the network unlocks the electric door strike and it stays unlocked all the time without any input from the user. I have wired all the Doorbell Intercoms the same way but only two function normally.
I have used the N01/COM1 setup as specified in the documentation for Electric Strike door locks.

I have used the N01/COM1 setup as specified in the documentation for Electric Strike door locks.
