This window sensor is the easiest way to ensure your home and valuables are secure! It’s a wifi connectable sensor device, that works by sending notifications to your phone, each time the sensor is triggered. This is perfect for keeping unwanted individuals out of your home, valuables, or personal items. With such a simple installation, combined with its vast practicality, it is the perfect option for monitoring your home, and other items, even while you're out and about!