Summer Infant Safe & Secure Sliding Door Lock with Alarm is available in Security Sets

This sliding door lock has it's own alarm! The ultimate child safety lock, just for sliding doors. This clever lock has an audible alarm, so you'll know if your fearless explorer somehow slides the door open. Alarm may be disarmed when you're outside. Cell battery and adjustment shim included. Toddlers often see interesting things outdoors that inspire them to open the door and walk outside unsupervised and many children can unlock the sliding glass door handles by themselves. This product not only keeps your sliding doors locked, it also provides and additional level of protection by sounding an alarm if your child tampers with the lock. Features: Patented design allows adult access from inside or outside. Prevents child from opening sliding doors. Alarm system notifies parent of any tampering immediately. Alarm on/off button for parent convenience. Note: This lock does not work on double-paned glass doors.