What's the difference between a baby monitor and an indoor security camera?

Functionally they overlap, but baby monitors typically include a dedicated parent screen, lullabies, room-temperature sensors and a closed (non-internet) connection, while indoor security cameras stream to a phone app over Wi-Fi and add features like person/pet AI detection, sirens, and smart-home integrations. Several products in this category — like the eufy E30 and Tapo C211 — are explicitly marketed as both.