Xiaomi Smart Doorbell 3S video doorbell

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