Yes. If connection to the base unit is lost for 48 seconds, the remote screen will start to flash. The remote unit will continue to try to connect to the base for 3 minutes (the screen will continue flashing). After three minutes without a connection, the remote unit will emit an audible alarm. [ABC note: we designed and LOVE this feature! It eliminates annoying alarm sounds when there is a temporary loss of connection, and waits until there is a defined “crisis point” before letting you know the connection has been disabled.]