The Robin Proline Compact doorbell is the only HomeKit doorbell that supports PoE (Power over Ethernet), as of March 2023. Here’s a look inside it.
The lens assembly is fastened to the motherboard by 2 screws. Removing it reveals the image sensor, which is quite small. Although the sensor is 5MP according to Robin, the doorbell has a measly video resolution of 1280×720.
The daughterboard handles the speaker, microphone, and the capacitive button. Since the capacitive button is glued to the face plate, it’s difficult to remove the daughterboard. This is the main challenge if you want to transplant the Robin Proline’s internals into a custom enclosure.