IP VERSO SECURE DOOR SET - CONTAINS I/O MODULE TAMPER SWITCH AND SECURITY RELAYAX9155198SET The Axis security bundle is for use with the Axis IP Verso and Axis LTE Verso intercoms. It features a combination of Axis accessories to increase security at entrance doors to the very highest level. The security relay is a simple accessory that prevents doors from being opened with a 12V battery. Such a battery allows burglars to open low power locks if they reach the cables connecting the intercom reader to the lock. Install the relay