Up to 150m Ultra-Long Wireless RangeThe doorbell and chime support stable connection up to 150m in open areas (30-50m indoors). Avoid installing on iron doors to prevent signal interference, perfect for large homes.Two-Way Voice Talk for Remote CommunicationTalk to visitors or delivery people in real time via two-way audio. Confirm identities or sign for packages safely without opening the door, even when you’re away.WiFi & Bluetooth Dual-Mode with Tuya AppConnect via WiFi or Bluetooth for flexible control. Access live video, make calls, and capture screenshots remotely through the Tuya smart home app, supporting smart home integration.Built-In IR Night Vision for 24/7 SecurityEquipped with infrared LEDs, the doorbell captures clear footage even in low light. Monitor your doorstep day and night for enhanced home security, no blind spots.Includes USB-Powered Indoor ChimeThe set comes with a plug-and-play indoor chime, which rings immediately when the doorbell is pressed, ensuring you never miss visitors, even in large homes.