Note: Not works with Alexa,not works with Google Home; If you want to open Alexa function, you could contact us through Amazon customer support: Package Includes: 1 * WiFi Doorbell 1 * Chime 1 * USB Charging Cable 1 * Installation Post 1 * English Manual 1 * Screw Kit Specifications: IP65 Waterproof :yes Color: Black Indoor Chime: USB Plug Camera: 2.0MP, 1080P Storage: Memory Card/APP Could (not included) APP: Tuya Smart/ Smart Life Doorbell Power: 4400mah built-in Rechargeable Battery Standby time: About 2-3 months (Wake up 10 times a day, 30S each time) Night Vision: Automatic switching from day/night PIR human detection: Support PIR detection and wake up Other Functions: Alarm, 2-way Audio on the phone APP, Remote wake up/PIR wake up Working temperature: -20°/60℃ Product Dimension: 16.2x13.5x4.2 cm Weight: 0.35kg PIR human detection: Support PIR detection and wake up Other Functions: Alarm, 2-way Audio on the phone APP, Remote wake up/PIR wake up Working temperature: -20°/60℃ Product Dimension: 16.2x13.5x4.2 cm