This SimpliSafe 2nd Gen CA001 Wireless Home Security Motion Sensor is a great addition to your home security system. It is compatible with the SimpliSafe 3rd Gen System and features Wi-Fi connectivity, making it easy to install and manage. The battery-powered sensor is designed for indoor use only and comes in a sleek white color. In addition to its compatibility with the SimpliSafe system, this motion sensor is also compatible with Amazon Alexa, making it easy to control your home security with voice commands. The sensor is wall-mounted and comes with all the necessary hardware for easy installation. This product is perfect for anyone looking to enhance their home security and stay protected.