Using Range ExtendersThe Base Station communicates with your Home Key and allsensors within range. Depending on the construction and size ofyour home, you may need to use one or more Range Extenders(not included) to extend the transmission zone of the Base Station.If you are using the Automatic call me option, the systemis programmed to send a cell phone text message or email alertwhen the Home Key is outside the range of the Base Station.This option works best if you are in range until you actuallyleave the confines of your home. Add a Range Extender forbest results.Extending Your SystemThe Home Heartbeat system can accommodate up to 32 totaldevices, including the Base Station, Home Keys, and sensorssuch as the Open/Closed, Reminder, Water, and Range Extenders.Getting the Most Out of Home HeartbeatLargehomesizewithtwoRangeExtendersAveragehomesizewithoneRangeExtenderRange Extender