Xiaomi Smart Doorbell 3S video doorbell

Product colour: Black | Wi-Fi band: Single-band (2.4 GHz) | Bell depth: 3,96 cm | Operating temperature (T-T): -20 - 50 °C | Bell width: 6 cm | Top Wi-Fi standard: 802.11b/g/n | Voice call: Yes | Rated voltage: 5 V | Operating relative humidity (H-H): 10 - 90% | Height: 146 mm | Package contents: Bell | Package contents: User manual | Package contents: Warranty Card | Connectivity technology: Wired & Wireless | Frequency: 50 - 60 Hz | Infra-red wavelength: 940 nm | Battery capacity: 5200 mAh | Depth: 29 mm | Charging temperature: 0 - 45 °C | Width: 52 mm | Bell height: 6 cm | Cloud recording: Yes | Operating frequency (RF): 433 MHz | Package contents: Mounting kit | Package contents: Charging cable