The Smartvest wireless doorbell is an extension of the Smartvest for signaling indoors. The bell supports five different tones and can play the signals at three different volume levels (four ringtones, one alarm tone). The triggers for a signal can be individually configured, making the wireless doorbell suitable as both a doorbell and an alarm. With automatic supervision (multiple daily functionality tests) connected to the central unit, its operational status is always monitored, allowing for timely responses to low battery levels.