Master Lock 266D Window and Patio Door Lock with Alarm for $22.39

Master Lock window and patio door lock and alarm is an adjustable locking security device with a pressure activated alarm. It locks your window or patio door closed to prevent unwanted entry. Any attempt to open the window or door activates the 110 Decibel alarm (Jet engines are 120 db) while the burglar is still outside of your home, deterring the intruder and immediately alerting any occupants of the attempt. .