1. The product can operate as usual in many harsh environments: outdoors, humidity, rain, sleet, snow, high temperature.2. Waterproof: The airtightness is good, the outdoor unit is equipped with a rain proof cover, which can prevent dust, water and moisture 3. Operation tempreture:-40-+50， can run normally in extreme outdoor temperature. ※ .Unlock mode：fingerprint, password, ID card, monitor unlock, cell phone tuya app unlock ※ Lifetime Customer Support ※ WiFi Tuya Smart 7" Video Door Phone Intercom ※ 1080P/AHD Wired Doorbell Camera Remote Unlock Motion Detection For Home ※ Long standby time lasts for 6 days. ※ Installation Way: Surface Mounting ※ Motion Detection: YES ※ System : Support 6 Indoor Monitor + 2 Call Panel + 2 Analog Camera ※ Language: English, Russian, Arabic, Portuguese, Turkish, French, Spanish, German