Such units will list a production date of 07/2015 on the bottom of the unit as shown in the picture above. Please note that newer units will not have this issue.
While any damage is limited to the unit itself, it can cause the base unit (transmitter) to interfere with other radiocommunications devices.
If you experience any malfunctions, with this product, please contact customer support on 1300 663 907 or firstname.lastname@example.org for assistance.
Thank you for your support.