Part 2, apps that let you stay at home (NO CLOUD)
UPDATE:
I asked about controlling the lights from separate app and its a no...
I asked about password and so far no success, there may be a way with a text file on an SD card!
Things like BlueIris seems to be able to handle the audio but i suspect the work is done in the BlueIris software, not the camera.

A 3 Mega pixel UHD Security camera (2304*1296 resolution at ~15fps ) with motion detection, IR Night Vision with Floodlights, 2 way audio, Cloud or local storage for currently under $50 has to be a good deal right, well there are some small caveats,
1. It is targeted for cloud based needing a paid subscription but you can use it locally only if you know how :)
2. you need an online account to setup the camera (Mobile App)

if you want one for yourself
HM311 Amazon.com https://amzn.to/2YN2ztB
Amazon.ca https://amzn.to/2YSJrKK
Heimvision products on Amazon.ca https://amzn.to/30WtOob

BlueIris https://blueirissoftware.com/