The sound is connected to the automatic checking of the operational readiness of the Landis&Gyr remote connection/disconnection device. The check is carried out once during a 24-hour period, and the time is determined by the time of last use of the remote connection/disconnection device or when the electricity has been switched off from the meter. The time of checking moves forward by about five minutes every 24-hour period. The time of the click can be moved to a more suitable time either by switching the electricity off for a moment with the control button in the meter or from the main switch of the home. Thus, the next testing of operational readiness will take place after 24 hours.