A Crystal-Clear 2K Image : High Definition 2560 x 1920 resolution, combined with our advanced HDR, ensures video is recorded in high quality. No Hidden Costs : Designed to protect your home as well as your wallet, eufy Security products are one-time purchases that combine security with convenience. Respond in Real-Time : Speak directly to anyone who approaches your front door via two-way audio. Tell your friends to come round the back or that you have just run out to get some milk. The Alerts Which Matter : With AI technology and our sophisticated algorithm, the camera intelligently detects body shape and face pattern. Ensuring you are only alerted* when a human, and not a stray cat, is at the door. Electronic Chime Included : Supports 8 fun and holiday-themed ringtones and adjustable volume level. Note: Installation requires existing doorbell wires at 16-24 VAC, 30 VA, or above. Not compatible with Apple HomeKit or existing chimes. Does not support continuous recording.