EZVIZ CS-HP4 HP4 Wire-free Peephole Doorbell, 1080p HD, 155° Ultra-Wide Angle, 4.3-inch Color Screen, Night Vision (Up to 3m), 4600mAh Rechargeable Battery, Wi-Fi, Cloud & MicroSD Storage (Up to 512GB), Two-Way Audio, Easy Installation, Black | CS-HP4

Installation Parameters Supportive Hole Diameter 15.5 to 50 mm Supportive Door Diameter 35 to 105 mm (1.38 to 4.13 inch) Sensor 1/3" Progressive Scan CMOS Lens 2.0 mm @ F2.2, visual angle (diagonal):155° Day/Night Switch ICR infrared filter IR Distance Max. 3 m Max. Resolution 1080p / 2MP Video Frame Rate 15fps Interface Storage Interface MicroSD card slot (max. 512 GB) Audio Input Built-in high sensitivity microphone Audio Output Built-in high-power speaker Buttons Doorbell button, power button, Screen wake up button Network Protocol EZVIZ Cloud Proprietary Protocol Video Intercom Local and remote video intercom General Function Cloud video encryption and image encryption

• Protect your front door in an easy way with the EZVIZ HP4. You can control it remotely via EZVIZ App, and even better, you may simply see who's at your doorstep before answering it using the indoor monitor
• Seamlessly view live videos from both the EZVIZ App and the convenient 4.3-inch color screen. The screen provides vivid 1080p clarity, making it effortless for the elderly and children to know what’s happening outside.
• Once the doorbell button is activated by the visitor, the built-in chime rings out to remind people inside. In the meanwhile, you will receive a prompt video call via EZVIZ App.
• Equipped with a 155-degree lens, the HP4 delivers wide field-of-view for apartment dwellers. It is also smart enough to automatically shift between day and night modes.
• The HP4 features a 4,600 mAh rechargeable lithium battery. The standby time can reach up to 150 days¹ with the smart power-saving functionality.