Hi everyone, the below picture contains the max electric current supported by the relay of the door phone.

Hello every one, here is some information I collected, which includes the model and firmware version that can support compatible with C4. If you have more information, please reply to complete the table. Thanks!

Hello everyone, recently I have sorted out the power consumption of the door phone. If you need it, you can check the picture below:

Hello， what are the functional differences between smart security solutions with or without cloud connection?