The RTS16 window contact can be used to monitor the status of windows, doors or gates. A change in the status of the monitored object is transmitted both wirelessly and indicated by a two-color LED.ON/OFF: When the contact is opened, an ON signal is sent. When the contact is closed, an OFF signal is sent.All telegrams are sent again after 10s. The current switching status is sent every 24 hours.Battery monitoring: The battery status is checked both when the status changes and every 24 hours from the last transmission. If the battery capacity is low, a BATTERY LOW signal is sent and the battery status is checked again every 2 hours.