Eufy T8990321 smart home security kit

Eufy 5-Piece Smart Security Home Alarm Kit. Product colour: White. Alert notification type: GSM. SMS. Central control unit interface: RF Wireless. Central control unit connectivity technology: Wi-Fi. Wi-Fi standards: 802.11b. 802.11g. Wi-Fi 4 (802.11n). Door/window sensor interface: RF Wireless. Door/window sensor connectivity technology: Wi-Fi. Door/window sensor operating temperature (T-T): -10 – 50 °C. Siren connectivity technology: Wi-Fi. Siren operating temperature (T-T): -10 – 50 °C. Siren dimensions (WxDxH): 56.2 x 22 x 56.2 mm. Package type: Box