after a PCB push button intercom supports GSM and WAN camera support etc like here
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13 freelancers are bidding on average $185 for this job
Greetings! I have read your instruction and I know well about what you want. I made similar work as yours, and want to know the detailed requirement. Looking forward working with you. Best regards.
I am an expert in schematic and Multilayer PCB design using Altium Designer. I am interested in this project and would like to discuss the details. please feel free to contact me.