The GE 45174 Personal Security Window or Door Alarm is a set of 4 white alarms designed to be used with windows or doors. Battery-operated and compact, these alarms are easy to install and provide a sense of security for your home. The package does not includes the necessary batteries, but please note that they are not included in the product itself. Made by GE in 2012, these indoor-only alarms are a convenient and reliable option for personal security.