Owner manual
76
Volume Control
To adjust the volume, use the volume buttons located on the top of the unit
BaCkup Battery
This alarm clock is equipped with a battery backup feature (1 CR-2032 battery included 
and already installed) to keep the clock time and alarm settings during power outage. 
The battery is located on the bottom of the unit for easy access (small Phillips head 
screw driver required, not included).
maintenanCe
To Store: You may leave the unit on display, or you can store it in a cool, dry place.
To Clean: Use only a soft dry cloth to clean the enclosure of the unit.
NEVER use liquids or abrasive cleaner to clean.
FCC disClaimer
NOTE: This device complies with part 15 of the FCC Rules. Operation is subject to the 
following two conditions: (1) This device may not cause harmful interference, and (2) 
this device must accept any interference received, including interference that may 
cause undesired operation.
 NOTE: This equipment has been tested and found to comply with the limits for a Class 
B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to 
provide reasonable protection against harmful interference in a residential installation. 
This equipment generates, uses and can radiate radio frequency energy and, if not 
installed and used in accordance with the instructions, may cause harmful interference 
to radio communications. However, there is no guarantee that interference will not 
occur in a particular installation. If this equipment does cause harmful interference to 
radio or television reception, which can be determined by turning the equipment off 
and on, the user is encouraged to try to correct the interference by one or more of the 
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the 
receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by HDMX could void the user's 
authority to operate the equipment.
IMPORTANT SAFEGUARDS:
When using an electrical product, basic precautions should always be followed, 
including the following:
READ ALL INSTRUCTIONS BEFORE USING
• Close supervision is necessary when this product is used by, on or near children, 
invalids or disabled persons.
• WARNING: Do not place speakers too close to ears. May cause damage to ear 
drums, especially in young children.
• Use this product only for its intended use as described in this manual. Do not use 
attachments not recommended by HMDX.
• Do not place or store this product where it can fall or be dropped into a tub  
or sink.
• Do not place or drop into water or any other liquid.
• Not for use by children. THIS IS NOT A TOY.
• Turn off product when not in use.
• Never operate this product if it has a damaged cord, plug, cable or housing.
• Keep away from heated surfaces.
• Only set on dry surfaces. Do not place on surface wet from water or  
cleaning solvents.
SAVE THESE INSTRUCTIONS
CAUTION: Please read all instructions carefully before operating.
• Never leave the product unattended, especially if children are present.
• Never cover the product when it is in operation.
• This unit should not be used by children without adult supervision.
• Always keep the product away from high temperature and fire.
Battery Precautions
• Use only the size and type of batteries specified.
• When installing batteries, observe proper +/- polarities. Incorrect installation of battery 
may cause damage to the unit.
• Do not mix different types of batteries together (e.g., alkaline with carbon-zinc or old 
batteries with new ones).
• If the unit is not going to be used for a long period of time, remove batteries to 
prevent damage due to possible battery leakage.
• Do not dispose of batteries in fire. Batteries may explode or leak.




