Wireless Easy DIY Installation - No Professional Needed! Tmezon's Wire-Free Video Intercom System with SD Card is a patented product in the video doorbell camera market, with a 7" touch screen monitor that's as easy to set up as a smartphone. | Real 1080P HD Resolution - It supports WiFi (2.4G/5G) and 915mhz frequency for signal transmission. Wireless doorbell with camera and monitor features a 7'' touch screen monitor with a 1080P resolution for crystal-clear images. With all functions integrated on the monitor, including answering calls, unlocking the door, and monitoring, it's as easy to use as a smartphone. | Stay Alert with Motion Detection - Our built-in PIR sensor detects motion up to 5m away from the doorbell camera, and sends real-time notifications to your monitor and cell phone. You can even view the video on your phone or monitor. | See and Hear Everything - Our 1080P HD video doorbell features 2-way audio, so you can see, hear, and speak to anyone from your phone or monitor when someone presses the doorbell.It's totally free, no subscription and monthly fees. Don't need to worry about the data lost that have no evidence for police if someone steals or damages the doorbell due to the TF card(not included)installed on the monitor. | Long-Lasting Protection - With a 5,000 mAh rechargeable lithium battery, the doorbell camera can last up to 90 days. Plus, there are no subscription or monthly fees to worry about. Monitor your home with complete control from the TUYA app.