When you're in a new place, an added measure of protection can give you peace of mind to sleep better at night, even if you've locked the door.This reliable and powerful alarm will give you that peace on mind whether you're traveling or staying at home. With a motion sensor that triggers the alarm when someone has opened the door, it can be used in college dorm rooms, at hotels and hostels, or even at home.With two lithium button cell batteries included, it comes fully operational and ready to use. The sound intensity level of 91dB is loud enough to hear throughout the room and will startle the intruder. No one will be able to get in or out without you knowing.It's easy to set up: while holding the thin blades together, simply slide them into the crack between the door and doorframe, then loop the cord around the door handle and adjust the toggle to keep it in place. Last