NO ADDITIONAL EXPENSE - No subscription needed! Every feature is free! Batteries are also included with the package in which we provide everything you need. Tech support and video tutorial are ready to serve if you have any question. REVOLUTIONARY ALARM PROTECTION - Tamper detection + Kidnap panic button + Wrong-try alarm send real-time alert to App, Gateway, email and sub-accounts (add for family, friends and office). The 360 protection provides full sense of security. ONE SAFE FOR WHOLE FAMILY - Register up to 99 fingerprints, 99 passcodes, unlimited number of sub-account App users for your family, with NO subscription required. Smart speakers (Amazon Alexa, Google Home) are also allowed to join in the smart security system.