HP7 Pro - 4K Palm Vein Video Doorphone Resolution: 4K UHD (3840×2160) * Lens: 2.0 mm, f/1.6, wide angle ≈158° diagonal * Unlock Methods: Palm-vein scan, face recognition, RFID card, PIN code, QR code, EZVIZ app, indoor monitor * Indoor Screen: 8-inch touchscreen, 1280×800 resolution * Storage: microSD up to 512 GB + EZVIZ CloudPlay support * Night Vision: Full-color + IR with auto switching * Smart Detection: Human motion detection, customizable alert zones * Weather Resistance: Durable outdoor unit, operating temperature −30°C to +60°C