Xiaomi Smart Doorbell 3S
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- External Dimensions: 146 × 52 × 29 mm
- IP Rating: IP65
- Battery Capacity: 5200mAh (typ)
- Rated Input: 5V ⎓ 2A (Type-C port); 8–24VAC, 10–40VA, 50–60Hz (doorbell AC transformer)
- Wireless Connectivity: Wi-Fi IEEE 802.11b/g/n 2.4GHz, RF 433MHz
- Infrared Light: 940 nm infrared light
- Audio System: Two-way voice calls
- Storage: Cloud storage
- Charging Temperature: 0℃ to 45℃
- Operating Temperature: -20℃ to 50℃
- Operating Humidity: 10%–90% RH, non-condensing
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