Door Bells & Chimes features: Monitoring alarm smart wifi video doorbell, wireless remote control intercom doorbell Color: we send based on the color or size of the main image of the product page. Quantitywe send based on quantity on title, if there is no quantity in the title, we send based on . Summary:WIRELESS CHIME & BATTERIES & USB CABLE INCLUDED - The Video Doorbell comes with Chime, batteries and USB cord, all is ready for you. Besides your phone, you can also hear the voice from the Chime when visitors press the button of doorbell. Those videos taken when the PIR detector is triggered would be automatically stored in network cloud. Just make sure to remove the plastic insulating strip from batteries before you charge them with USB cable.PIR MOTION DETECTION C This Wireless Doorbell Camera has built-in PIR motion detection feature. You can set the motion detection sensitivity based on your need. In crowded environment, it is recommended to set Motion detection Sensitivity' as Low' or just set off to reduce the frequency of device arousal and notifications, thus to extend battery life and avoid too much disturbance.Full HD VIDEO & TWO-WAY AUDIO- After easy configuration connection, the doorbell sends real-time notification to your phone when it is pressed or motion is detected. You can see, hear and speak to visitors directly from your smartphone via on-demand video no matter where you are. Full HD video, 166 wide-angle lens, two-way audio with noise cancellation microphone, PIR Motion detection system, all that makes you enjoy the doorbell.DAY & NIGHT MODE- Doorbell Camera can automatically switch between day and night mode and working with IR LEDs, you can get clear vision even in the pitch-dark environment. Day or night, rain or shine, always enable you to see clearly who is outside your door, thus to guarantee the safety of your house. Also, you can make other customized adjustments in app to make your life convenient and smart.WIRELESS CONNECTIVITY- This doorbell camera supports 2.4GHz Wi-Fi, NOT supports 5GHz Wi-Fi. With long range Wi-Fi connectivity and two-way voice calls, this doorbell camera lets you see and speak to whoever is it at the door and also lets you hear what they are saying. All is in your hand just with a phone. It also supports multiple family members online in the app simultaneously to understand the dynamics of the front door. Two ways to power:1) Powered by batteries: Please make sure to remove the insulating tabs from the batteries , after that use the USB cable to charge the doorbell camera with batteries installed inside, just like how to charge your phone. After fully charged, your wireless video doorbell will run on batteries.2) Powered by hardwiring: The doorbell uses AC power but it must go through a transformer as all hard-wired doorbells do to make it lower voltage. Two ways to install:1) You can use the tape (Included) to mount the doorbell. This is a super easy way to mount.2) You can use the screws to mount it. It is more secured and recommended. If you choose this way to install, you should mark 4 drill holes and use a bit to drill holes in your wall and insert the anchors, then secure your doorbell on the wall with 4 mounting screws and 1 security screw. All needed screws are included in the pack. More questions you might concern:1) The doorbell camera only supports 2.