If you're uncomfortable dealing with the transformer, call a licensed electrician that can test and install a new one for you if needed. Yes, you can replace a wired doorbell with a wireless model ...

Installing a video doorbell requires only ... Step 2: Find and Inspect Your Doorbell Transformer Use a multimeter set to "AC ...

He reasoned that he could tap into the low-voltage side of the doorbell transformer and watch for the telltale fluctuations that would indicate the bell was doing its thing. The ESP8266 has an ADC ...