Field of view and what it actually sees
Watch out: the 160° figure manufacturers advertise is usually horizontal or diagonal, not vertical — and many popular devices have a vertical angle of only 90°. Ask about the vertical angle specifically, or pick a device with a 1:1 sensor or two cameras, because that's what shows the whole person and the parcel left on the ground.
This is the reason behind the most common complaint: you see the face of whoever is standing there, but not what they left at the door.
Power: battery or cable?
A battery is easier to install, but it lasts between one and six months depending on how busy the area is, and it disables continuous recording to save power.
Wiring it up — or using the wired chime transformer, commonly 16 to 24 volts AC, which most smart doorbells need — gives you permanent operation and continuous recording. And if you're building, run the cable: it's two minutes during the shell stage.
The keypad and its limits
A keypad is convenient: a code for the driver, another for the cleaner. But be aware: most of these devices store the codes locally with no real access log.
If you need to know who entered and when with a record you can go back to, that's the job of an access-control system, not the doorbell.
Where is the recording stored?
Cloud storage is convenient but it's a monthly subscription, and it may mean your home's clips sit on a server outside the Kingdom.
Local storage on a card or on the home recorder keeps it with you. Best is a device that supports both, so you choose.
Practical takeaways
- Confirm the vertical angle, not just the horizontal one
- Prefer cable power over battery
- Don't rely on the keypad as an access log
- Ask where the recording is stored and who owns it
- Make sure it works with your existing camera system