✓?Night Vision & 2-Way Audio?The doorbell camera is equipped with day/night vision automatically switching function and 2-way audio. When visitors press the doorbell, no matter day or night, you can clearly see the visitors' face and have a real-time video talk each other on the monitor or your cell phone. Package include:doorbell camera, monitor, battery, unlock module, TF card, USB cable, adapter, manual. ✓?Motion Detection & 160° Wide Angle Lens?Alert will be pushed to your cell phone and indoor monitor once the movement is detected(within 5m), it will automatically take an video and then save in the TF card(included) of indoor monitor, you can view it on the monitor or your cell phone. 160-degree wide angle lens give you wider field of view, never miss any coner. ✓?No Monthly Fees?The events are stored in the TF card(included) inside the indoor monitor, you can view them on the monitor. And they’ll be synchronously uploaded to APP "TuyaSmart", so your cell phone is also enable to view. Most important of all, it is TOTALLY FREE, subscription and monthly fees will not be charged. Due to the TF card is inside the monitor not the doorbell, you don't need to worry about the data lost that have no evidence for police if someone steals or damages the doorbell. ✓?7 Inches 1080P TOUCH SCREEN MONITOR?Wireless 7 inches TOUCH SCREEN MONITOR with minimalist system, easy operation like smart phone. The resolution of screen is 1080P, provides you with clearer images. You can place it everywhere, just connect a plug for the screen. All functions are integrated on the monitor for you to control, including answering the call, unlocking the door, monitoring and etc. ✓?100% WIRELESS, Easy Installation?No wire is needed to connect. It supports WiFi (2.4G & 5G) and 915mhz frequency for signal transmission. Compatible with"TuyaSmart"APP, so you can control this system on your phone.The 915mhz frequency it adopts has better penetration performance in the current all radio frequency. Its valid signal distance is up to 100m in open space(ATTENTION: no walls or no metal between doorbell and monitor).The actual signal performance depends on the usage environment.