Ruger Pepper Gel Dorm/Apartment Kit - Police Strength Keychain Pepper Gel (Max Protection - 25 Bursts) and 120 dB Door Stop Alarm (1,000 Foot Range) Pepper gel, virtually eliminates airborne particles and wind blow back for those protecting themselves on the go or indoors. Gel formulation doesn't affect the user or bystanders Pepper Gel with Flip Top - with key ring offers Greater Protection at a Safe Distance - 25 Bursts (up to 5x the Competition) at up to 12 Feet (3.7 Meters Away) Door Stop Alarm - 120 dB Sounds when Pressure is Applied. The Door Wedge design blocks inward opening doors and helps prevent the door opening which gives you precious time to reach for your pepper spray Requires 1 x 9 Volt Battery (not included) Inexpensive, practical and easy to use. No set up, installation or monthly monitoring fees