Original Xiaomi Smart Doorbell 4 Pro, Xiaomi Smart Doorbell 4 Pro

1. Doorbell rated input: 5V/2A
2. Doorbell wireless connection: WiFi IEEE 802.11b/g/n/ax, 2.4GHz, Bluetooth Low Energy, 433MHz
3. Doorbell battery capacity: 9800mAh
4. Doorbell storage: Cloud storage + 32GB eMMC internal storage
5. Doorbell operating temperature: -10°C to 45°C
6. Doorbell charging temperature: 0°C to 45°C
7. Doorbell compatible systems: Android 8 and iOS 12.0 and above
8. Doorbell receiver rated input: 100-240V, 50-60Hz, 0.04A
9. Doorbell receiver wireless connection: 433MHz
10. Doorbell receiver operating temperature: -10°C to 45°C
11. Doorbell receiver operating humidity: 10%-90% RH, non-condensing
12. Dual-lens cameras offer a wide field of view, covering every area in front of your door.
13. 5MP ultra-clear main camera captures crystal-clear details outside your door.
14. Ultra-clear infrared night vision provides clear visibility in dark corridors.
15. 6-month battery life, requiring only two charges per year.
16. 24/7 intelligent detection for monitoring outside your door.
17. 180-degree infrared alarm for sensitive sensing.
18. Built-in storage and cloud access provide dual security for critical evidence.
19. Secure chip encryption protects data and privacy.
20. Soft light design for a gentle glow.
21. Smart voice control for easy access to doorbell status.
22. Multiple anti-loss features, including removal alarm.