This top-quality STI-6402 Exit Stopper Door Alarm is the perfect solution for securing your double doors. It is designed by STI, a trusted brand in fire detection systems, and manufactured in Taiwan. This alarm can be easily installed and will provide reliable security for your doors. With its sleek design and advanced features, the STI-6402 Exit Stopper Door Alarm is a must-have for any business or industrial property. It is ideal for use on double doors and comes in its original box, making it a great gift for anyone who needs to secure their doors. Get yours today and enjoy the peace of mind that comes with knowing your doors are safe.