The Smart Point Security Window and Door Alarms 2 pack are a reliable and effective way to enhance the security of your home. With a loud 90dB maximum resolution, these alarms will alert you to any potential intruders. The batteries are included, making installation simple and hassle-free. These door alarms are suitable for both indoor and outdoor use, providing peace of mind wherever you go. The wireless connectivity allows for easy setup without the need for a smart home system.