Code-It for windows /global/scaled/637x277x0x0x637x-1/Other-multlockCOM-Pics-For Business-Code it-MTL_Banner_Code-It® Window_V1.1.jpg Features: Enhanced access control - By storing up to 5 different 6-digit user codes. Simplified power sourcing - Battery operated with standard AAA alkaline batteries that last for approximately 2 years/15,000 operations. Low battery warnings - Ensuring no window is ever forced shut. Superior code storage capabilities - Codes are not affected by voltage drops/battery changes. Seamless code administration - One combined administrator/user code to enter, change and reset user codes and enable/disable sounds.