They might your operate but they can not get inside your hotel room, apartment, or home when secured by the Super Stop Alarm. With box package which protect the product well Battery Installation : predestined the on/off switch is in the `` off '' position. the unit upside down and explicit the battery compartment Install one 9-volt battery -LRB- not included -RRB- and close the compartment. The on/off switch will the unit from accidentally sounding. one 9 volt battery - not included Note : The gap between door prat and floor should be 1 - 3.5 cm .