he G4 Doorbell Pro is a WLAN-enabled video doorbell with a 5 MP main camera and 8 MP packet camera. The doorbell's main camera is equipped with an IR LED for improved night vision. In combination with the integrated porch light, it ensures a reliably clear surveillance image around the clock. The G4 Doorbell Pro also offers echo cancellation and two-way audio for interaction with visitors. The programmable display allows you to send notifications or delivery instructions to couriers. The G4 Doorbell Pro is a powerful plug-and-play security tool and can be set up and configured in minutes with the UniFi Protect app. Ubiquiti G4 Doorbell Pro. Product colour: Black, International protection code (IP): IPX4, Housing material: Aluminium, Polycarbonate (PC). Internal memory: 0.256 GB. Megapixel (approx.): 5 MP, Second camera resolution: 8 MP, Maximum video resolution: 1600 x 1200 pixels. Transmission technology: Wireless, WLAN standards: 802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac). Power source: AC, Input voltage: 16 - 24 V, AC input frequency: 50 - 60 Hz