Mytrex RA3T Users Manual

COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-6557

FCC ID: NY5RA3T

Exhibit 8: User’s Manual

RA3T TRANSMITTER

GENERAL DESCRIPTION:

RA3T transmitter is designed to send a coded transmission to any standard 418 MHz ASK receiver manufactured
by Mytrex, Inc. The RA3T may be worn around the neck or on the wrist and is activated by pressing the button on
the front of the transmitter. When the RA3T is activated, the LED on the front is i11ununated to provide an
indication of the battery status. A green LED indicates the battery voltage is above 4.5 volts. A red LED indicates
the battery voltage is below 4.5 volts. Typically the transmitter will function another year depending on the
frequency and length of use each day.

An automatic telephone dialer used in the medical industry is a typical application that might utilize an RA3T
transmitter and an RA3R series receiver. The receiver would be used to activate the dialer to begin calling for help
in response to a user pressing the Panic button on the RA3T.

NOTES:

The RA3T transmitter is designed and tested to high specific standards. However, due to laws of physics, vagaries
of radio transmissions and the limited output power allowed by the FCC, there are some limitations to be
considered:

· All receivers may be blocked by radio signals occurring on or near their operating frequencies, regardless of the
code selected.

· A receiver can only respond to one transmitter signal at a time regardless of the number of codes in the

Valid Code List.
Wireless equipment should be tested regularly to determine if there are sources of interference and to
protect against faults.

.

NOTIFICATIONS:

· 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. 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.

· Comnect the equipment into an outlet on a circuit different from that to which the receiver is connected.

COMMUNICATION CERTIFICATION LABORATORY TEST REPORT: 73-6557

FCC ID: NY5RA3T

· Consult the dealer or an experienced radio/TV technician for help.

Important: Changes or modifications to this unit not expressly approved by the responsible party for
compliance may void the user's authority to operate the equipment.
Infrequently used radio links should be tested regularly to protect against undetected interference or
fault.
A general knowledge of radio and its vagaries should be gained prior to acting as a wholesale
distributor or dealer, and these facts should be communicated to the ultimate user.