【1080P FHD Image & Clear Night Vision】HeimVision video doorbell is adopted an all-glass lens with HDR and distortion correction, which presents you a 1080P full HD video with 166° wider view. Equipped with IR sensor and LED, the doorbell camera will automatically switch the light to ensure a crystal clear image at night, it secures your home 24/7. 【Battery Powered up to 6 Months Stand-by Time 】This HMB1 doorbell camera supports 100% wireless installation, it includes 2pcs high quality, total capacity 9600mAh rechargeable batteries, which is 50% larger capacity than other brands and providing up to 6 months stand by time for each one charge. (Please FULLY CHARGE it before using it for the first time). You will never be frequently bothered by tearing down the doorbell for charging. 【AI Human Detection & Instant Message Alerts】HeimVision wireless doorbell is equipped with PIR motion and human detection sensors. Instant message alerts will be pushed to your mobile device when someone passes by your door and triggers the human detection sensor, the detection distance, and sensitivity (low/ high) are adjustable as per your preference, you won't miss anything that matters and not be bothered by false alert. For example, a truck runs far away your house won't bother you anymore. 【2-Way Audio & Remote Control on APP】Built-in full-duplex microphone and speaker allows for real-time 2-way talk and enables you to see, hear and speak with visitors from your mobile phone, tablet, or laptop wherever you are, no matter you are engaged in working or jogging in the park, you can keep an eye on your door and remote control it on your APP. What's more, you could also prerecord 3 voice messages for quick response to visitor when it is inconvenient for you to answer the phone. 【2 Storage Options & Weatherproof】HemiVision doorbell camera is IP65 weatherproof, it secures your home day and night, snow, or shine. It supports both the MicroSD/TF card, Max. 128GB ( Not Included) and encrypted cloud storage with one month free trial. The doorbell comes with a wireless chime (powered by AA batteries/ charging cable, included), you will never miss a visitor. HMB1 doorbell supports both 100% cordless and existing doorbell wiring (Input AC/DC12V to 24V) installation for options.