A burglary occurs every 14.5 seconds in the U.S. and budget cuts have led to an average 911 response time of 10 minutes. Furthermore without the ability to install a home security system renters and travelers can have a hard time feeling secure in their temporary housing. The SABRE Door Stop Alarm is a great solution to either help fortify an existing home alarm system or use on its own in a bedroom dorm hotel room or apartment. The extremely 120dB loud alarm is audible up to 1500 feet or 457 meters away and sounds when door pressure is applied. It is compatible with doors that have a 0.75 in. gap between the floor and bottom of door. If the gap is greater the alarm will not be able to activate when the door is opened. The alarm is coupled with a nonskid pad to prevent the door from opening. This attractive premium white alarm installs easily in just seconds simply slide it under the crack of an inward swinging door. There is no wiring needed so the alarm works during power outages. Requires one 9V battery. Battery not included. A small Philips Head size screwdriver is required to remove battery compartment cover. For an extra level of security the Door Stop Alarm provides a battery status update via a low battery indicator. The Door Stop Alarm was developed by SABRE and is the most pepper spray brand trusted by police and consumers worldwide meaning this product is extremely reliable.