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FCC User Guide Information

Radio Frequency Interface Requirements - FCC

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.

Radio Transmitters (Part 15)

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.

Changes or modifications not expressly approved by the party responsible for 

compliance could void the user’s authority to operate the equipment.

FCC RF Exposure Guidelines

Safety Information
Reducing RF Exposure - Use Properly

Only operate the device in accordance with the instructions supplied.

This device complies with FCC radiation exposure limits set forth for an uncontrolled 

environment. 

FCC Regulations

21

20

Appendix

FCC Regulations

Muscle Mass Percentage

(Source: International Commission on Radiological Protection,1975)

Men

Women

Approximately 40% of total body weight

Approximately 30% of total body weight

Table of Body Fat Level (Unit: %)

Table of Body Water Level (Unit: %)

Standard for Men

Rating

low
Normal
Moderately High
High

Age

20-29

<13

<14

<16

<17

<18

14-20 15-21 17-23 18-24 19-25

21-23 22-24 24-26 25-27 26-28

>23

>24

>26

>27

>28

30-39 40-49 50-59

60+

Standard for Women

Rating

low
Normal
Moderately High
High

Age

20-29

<19

<20

<21

<22

<23

20-28 21-29 22-30 23-31

24-32

29-31 30-32 31-33 32-33

33-35

>31

>32

>33

>34

>35

30-39 40-49 50-59

60+

a) The body fat percentage 

(%)

5%-60%

/0.1

%

Source: University of Illinois Department of Food Science and Human Nutrition. 

Body Fat Percentage Calculator. 

b) The body water percentage 

(%)

43%-73%

/0.1

%

Men

Women

BF % RANGE
4 to 14%
15 to 21%
22 to 24%

25 and over

4 to 20%
21 to 29%
30 to 32%

33 and over

70 to 63%
63 to 57%
57 to 55%
55 to 37%
70 to 58%
58 to 52%
52 to 49%
49 to 37%

OPTIMAL TBW % RANGE

Source: Derived from Wang & Deurenberg: “Hydration of fat-free body mass”. American Journal 

Clin Nutr 1999,69833-841.

Bone Mass Percentage

(Source: Rico et al.1993)

The average bone mass percentage for both men and women is between 4 to 5%.

Summary of Contents for GBF-1251-B1

Page 1: ...China TEL 86 760 88282982 www transtek cn User Manual Body Fat Analyzer GBF 1251 B1 Please do read the user manual carefully and thoroughly so as to ensure the safe usage of this product and keep the...

Page 2: ...nly Operation Start Measuring First Measurement Daily Measurement Fast Measurement Manage Your Health Body Fat Indicator Data Transmission Troubleshooting Error Prompt When Measuring When Data Transmi...

Page 3: ...s intended function Nearby portable and mobile RF communications equipment can affect the performance of GBF 1251 B1 And the device can interfere vicinity electrical equipment Manufacturer will make a...

Page 4: ...el Low Body Fat Level Normal Body Fat Level Above Average Body Fat Level High User Interface Setting Body Fat Analysis Result Water Analysis Result Muscle Mass Analysis Result Bone Mass Analysis Resul...

Page 5: ...ta Turn on Bluetooth and the App Make sure both are ON when pair up is proceeding Press and hold UNIT button in the back of the scale to start pair up Symbol and symbol will be shown on the LCD altern...

Page 6: ...g As pictured on the right the digits 30 blinks The operator may touch the function key or to increase or decrease the numeral Range 10 to 85 years old You may touch and hold the function key or for f...

Page 7: ...t reading scale No special programming steps are required Once the scale is initialized as previously described you may simply step on the scale to measure your current weight For only weight reading...

Page 8: ...en turn off If it identifies two or more users the User ID will be displayed alternately for example U1 and U2 you may touch or key to select the relative user then touch SET key to confirm The measur...

Page 9: ...pecific User ID will it be transmitted to your mobile after measurement The symbol will disappear after successful data transmission and you may check your personal health data stored in your smartpho...

Page 10: ...ater muscle mass and bone mass The device powers off Wipe your feet with a damp cloth keeping them slightly damp when starting measurement Batteries not yet installed Worn batteries Low battery Instal...

Page 11: ...e DON T wash the device with water or immerse it in water DON T use propellant abrasive or other chemicals to wipe the dirt in avoidance of discolor or malfunction DON T disassemble this device If you...

Page 12: ...anges or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment FCC RF Exposure Guidelines Safety Information Reducing RF...

Page 13: ...that the device be powered from an uninterruptible power supply or a battery Guidance and manufacturer s declaration electromagnetic immunity The device is intended for use in the electromagnetic envi...

Page 14: ...device is intended for use in the electromagnetic environment specified below The customer or the user of the device should assure that it is used in such an environment Portable and mobile RF communi...

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