[720P FHD Image & Clear Night Vision] HeimVision video doorbell adopts glass lens with HDR and distortion correction, which can present you 720P Full HD video with 135 degree wide angle vision. The doorbell camera equipped with infrared sensor and LED will automatically switch the light to ensure a clear image at night, ensuring your 24/7 security. [Battery Powered, Up to 6 Months Standby Time] This HMB1 doorbell camera supports 100% wireless installation, can install 4 AAA batteries, and provides up to 6 months standby time and is charged on time. (Please fully charge it before using it for the first time). Never worry about opening the doorbell to charge. [3x Digital Zoom Detection & Instant Message Alert] The 300,000 pixel sensor doorbell is equipped with PIR motion sensor and human detection function. When someone enters your door and triggers your door, an alert instant message detection will be sent to your mobile device, and the detection distance and sensitivity (low/high) can be adjusted according to your preference, therefore important information. [Auto Snapshot or Video] When the visitor presses the doorbell or triggers the motion detection, the camera will automatically take a snapshot or video and save it to the Micro SD card (maximum support 32G TF memory card, SD card must be purchased separately). You can view the video on your smartphone at any time. [2.4 inch LCD screen and mini doorbell] 2.4 inch HD TPS screen, slim design, key operation, hands-free. Outdoor doorbell, built-in infrared sensor and 1200TVL camera, 100o wide angle, night vision, rain, dust and vandalism. It can connect all electronic locks.