**Lewis N. Clark Personal Alarm** Use on hotel or dorm room doors or windows as an added safety measure. INCLUDES: Built in LED flashlight and two button cell batteries. **Great additional personal security feature when traveling, in an unfamiliar environment, or late at night - Uses two CR2032 Lithium “button cell” batteries - Item is 1.5 L × 1 W x 1.5 inches H About this item: • LOUD + ATTENTION GRABBING: High pitched 91 dB sounds when the home alarm is triggered. Loud enough to alert your neighbors, wake you up, and deter would-be thieves. • MAXIMUM SECURITY + VERSATILITY: Stay safe at home and while you travel. Perfect alarm system for front door, bedroom, apartment, dorm, or hotel. Can also use in windows. • EASY SET-UP: Hold the thin blades together and slide them into the crack between the door and doorframe, loop the cord around the door handle, and set alarm. It's so simple, even your kids can do it. • COMPACT + PORTABLE: Perfect hotel door alarm and theft deterrent for your next vacation. Small and weighs less than 2 ounces. Easily fits in your suitcase, briefcase, backpack, laptop bag, or purse.