Feature: 4.3 inch high-definition large screen, ultra low power design. Quick access through applications (Automatic wake-up in 3 seconds), respond to user access requirements in one second. 2 IR lED, which supports two-way audio and cancels noise. APP supports for iOS and Android. Automatically take photos and videos when visitors ring the doorbell. Supporting PIR motion detection alarm. Precise design, weatherproof. Cloud storage function, support maximum 32GB TF Card (save video recording). Built in lithium battery, USB easy to charge. Easy to install (no need for any cable), just Wifi connection. Specification: Condition: Brand New Material: ABS Plastic Color: As Picture Show Package Weight: Approx 624g Supporting door thickness: Approx 35mm-90mm Diameter of peephole: 15-58mm Display Size: 4.3" Solution: OV9712 CMOS Sensor + Hi3518E SoC Display resolution: 1.0MP-1280x720P Focal length: 1.7mm Perspective: 166 degree wide angle Input/output: built in microphone and speaker Type: bidirectional audio, canceling noise. Video compression: H.264 Resolution: 1280 * 720 @ 25FPS Night visibility: 2 Infrared LED PIR Motion Detection: Yes (if the PIR is turned on, it can only be used 1200 times on a full battery, please note this!!!) Protocol: TCP/ IP, UDP, DHCP, P2P, RTSP, FTP Wireless standard: 2.4GHz WiFi IEEE 802.11b/g/n SD TF Card: Max 32GB (video recording 15 seconds) LCD size: Approx 140 * 82 * 20mm (plastic) Camera Size: Approx 64.5 * 64.5 * 16mm (copper) Power supply: 3600mHA battery (2pcs x 1800mHA) Charging port: MICRO USB Working mode: 380mA (IR open) Standby mode: 200uA Waterproof: Yes User accounts: a total of 4 users (administrators and ordinary users) Working temperature: -20 ℃ to 55 ℃ Relative humidity: 85%, no condensation. Package List: 1 * Host 1 * USB Cable 1 * Peephole 1 * User Manual 1 * Installation Package Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1、4.3-inch high-definition large screen, ultra low power design 2、Quick access through applications (Automatic wake-up in 3 seconds), respond to user access requirements in one second 3、2 IR lED, which supports two-way audio and cancels noise 4、Automatically take photos and videos when visitors ring the doorbell 5、Cloud storage function, support maximum 32GB TF Card (save video recording)