who are you? a sister I didn't know my dad fathered?
Sounds like something my dad (a retired electrical engineer) would suggest to me.
Hard to convince him new school is usually better (wireless makes things portable). Reminds me I have to teach him how to use the navigation in his new old fart Lincoln MKS. I set up the nav for his trip to Walla Walla washington for a wedding of my cousin's child. He told me he didn't use it coming back because he didn't know how to change the destination. Also says he can hardly hear the voice prompts and I'm guessing he didn't consult the manual to figure out how to fix that so I'll have to do that too.
I went ahead and bought a baby monitor - $18 dlvd. Probably cheaper than buying a few hundred feet of 2 conductor stranded wire and the connectors to go on it. Hookup wire and connectors seem very expensive nowdays compared to when I used to buy them as a teen or younger adult.
Baby Monitor may have a secondary use in a few years - it appears many people also buy them to help take care of their aging loved ones. Dad's 76 in August so I'm probably going to have a bigger role in helping him soon.