Hi @dradprice3, I don’t think I have a siren or strobe in my setup at my house, but I’m sure it probably could be done. To be clear, I’m bypassing the alarm system panel entirely and just using the wiring for the sensors.
What are you doing on end of line resistors?
Um … nothing. I’m not an electrical engineer, I’m a software guy. I don’t know anything about resistors, so I decided to just try plugging in the wires directly to the NodeMCU and see if it works. It does! Maybe this is a grave noob mistake, but so far so good. From what I’ve read the ESP8266 has an “internal pullup resistor” which I am enabling in the code, but I’m not even 100% sure what this means.