A 100% Wire-free Security CameraPowered by professional long-lasting batteries, the BP4-SL wireless security camera is totally wire-free. You can mount it anywhere indoor & out to monitor you property, without running any cable at all. NOTEif you use this camera with your NVR, make sure to upgrade NVR to 3.1.6 or later for better performance. Enjoy 2K 3MP HD video and 2-way audioView live footage directly on your phone or integrate it with an xmartO NVR system for crystal-clear video. The built-in 2-way audio allows you to listen and speak to your loved ones effortlessly with just one tap. Customize your security with alert settings to define detection zones, schedule alert periods, and even turn off notifications when needed. The daily alert list gives you an overview of all events throughout the day. Enough Defense to Secure Your PlaceWith both spotlight and siren built-in, the camera light up the area and let out siren when people detected. In the meanwhile it sends ale