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 $0/5&/5 Warning: Please inspect all heaters to ensure there is no damage before assembly. Any excessive vibration during transport may cause the heater to damage the element. Do not start the sauna if damage is detected! Please contact your dealer or manufacturer for troubleshooting and parts replacement. Disclaimer: The infrared rays emitted by your sauna are reported to provide a wide range of possible therapeutic benefits, according to studies completed around the world over the past 25 years. These benefits are only for reference and do not imply that infrared sauna will cure or treat any disease. Please consult your physician before beginning infrared therapy if you have a health problem, are taking prescription medication, or have an acute joint injury. People with surgical implants (metal pins and rods, artificial joints, silicone, or other types of surgical implants) usually do not experience any adverse effects, but they should also consult their doctor or surgeon before starting infrared therapy. Please mention models are subject to change without notice. Pictures shown are for display purposes only and may differ from your exact model. Please read and follow all instructions before use. 1. Please follow all warning labels and marks in sauna room. 2. Please do not install any sockets on the inside or outside walls of the sauna room. 3. Sauna doors should not be fitted with locking devices that could result in getting stuck inside the sauna. 4. Ceiling vents can be left in the open position during use. 5. Caution! HIGH HEAT HAZARD: Normal body temperature should not exceed 103°F. Symptoms of excessive heat therapy include dizziness, drowsiness, and fainting. Effects of excessive heat therapy may include inability to perceive heat, inability to physically leave the sauna, lack of awareness of impending danger, loss of consciousness, and foetal damage in pregnant women. Heat therapy raises your body's core temperature. It is not recommended to set the desired temperature too high. 6. Hydrate to replenish body fluids before, during and after the sauna. 7 After 2 hours of continuous use, the sauna needs to be switched off for 1 hour. 8. To avoid burns, do not touch the heating elements. 9. Do not use drugs or drink alcohol before or during a sauna as they may cause unconsciousness and/or other harmful physical injuries. If absolutely necessary, people using medications should consult a doctor before a sauna. Some medications may cause drowsiness, while others may affect heart rate, blood pressure and/or circulation. 10. Caution! Please make sure your hands are dry and free of moisture before plugging and unplugging power cords and harnesses from the power supply and circuit board. 11. Do not operate the sauna with wet hands or feet to avoid electric shock. 12. Do not touch the metal pins of the plug. 13. People who are obese or have a history of heart disease, low or high blood pressure, circulatory problems or diabetes should consult a doctor before use. 14. Do not pour water or any other liquid on the infrared emitter. 15. Do not place flammable materials near or on the heater. 16. Do not strike or damage the heating element as this may cause an electrical short circuit and induce a safety risk. Thanks for choosing infrared sauna room!  
 17. To reduce the risk of injury, do not allow children to use saunas unless they are closely supervised by adults and have a doctor's prescription for sauna use. 18. If the power cord is damaged, it must be replaced immediately by the manufacturer or its agent. 19 If you notice that the power cord is too hot or the electrical equipment may be experiencing technical problems, please contact the manufacturer or its agent immediately to avoid a dangerous situation! 20. Women who are pregnant or may become pregnant should contact their doctor before use. Excessive temperatures are likely to cause foetal damage during pregnancy. 21 Do not sleep in it. 22. Do not stack or store anything on top of or inside the sauna. 23. Do not use during lightning storms to avoid electric shock! 24. Do not attempt to make any repairs yourself. 25. If there is a problem with the sauna, please contact the seller, dealer or manufacturer to avoid a safety hazard. 26. Unauthorized repair attempts will void the manufacturer's warranty. 27. Please make sure the outlet power supply meets the required specifications. Non-compliance may pose a safety risk. 28. Some sauna models are equipped with reading and roof lamps. Do not attempt to touch the lamp as it becomes very hot when energized to avoid burns. Do not attempt to touch it for at least 20 minutes after turning off the power. 29. Do not install the sauna near water, near a bathtub (if water will splash on the sauna), near a shower (if water will splash on the sauna), in a wet basement or near a swimming pool (if water will splash on the sauna). 30. Do not use liquid cleaners or aerosol cleaners in the sauna. Unplug the sauna from the wall socket before cleaning. Use plain water and a soft cleaning cloth. 31. When replacement parts are required, make sure they meet the manufacturer's specified requirements. 32. Unauthorized substitutions may result in fire, electric shock or other hazardous conditions. After making any repairs, have a service technician perform a safety inspection to determine if the sauna is in good working order. 33. Do not use any wall outlet adapters or extension cords between the sauna power cord and the wall outlet. If you must use an extension cord, have a certified electrician make the shortest extension cord possible. Make sure it is not wired in such a way that it could cause a saf…

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 routed so as not to be stepped on or pinched by any object that may be resting on them. Power cords should be 

 HBu001C HBu001C 3.1Warranty service: Within the free warranty period, in case of a malfunction caused by the product itself, customers can get in touch with our service staff to help you solve problems. Meanwhile, the detailed reasons you should provide so that we can better to assist you in dealing with your issues. If needed, we will send the relevant replacements for troubleshooting. Please feel free to contact us for any issues it may cause before or after your purchase through our website. We are here glad to serve you all the time! ([email protected]) 

 FCC Warnning: 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 againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: ЬReorient or relocate the receiving antenna. ЬIncrease the separation between the equipment and receiver. ЬConnect 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

CLEESINK LLC 16009 Camino De La Cantera Irwindale California United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-8-3 To whom it may concern: We, CLEESINK LLC, hereby certify that the equipment for which authorization is sought (FCC ID: 2BH3O-YDSNF002) is not “covered” equipment prohibited from receiving an equipment authorization pursuant to § 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, we are not identified on the Covered List (https://www.fcc.gov/supplychain/coveredlist) as an entity producing “covered” equipment. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(b) and (d)(5) and (6). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. Sincerely, Signature Jinxing Wei Manager CLEESINK LLC 62_[model] CoveredEqu_2.911(d)(5 )(i) and (ii) - U, V03

CLEESINK LLC 16009 Camino De La Cantera Irwindale California United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-8-3 U.S. Agent Designation CLEESINK LLC acknowledges their consent for the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought (FCC ID: 2BH3O-YDSNF002): Name and company of U.S. agent: CLEESINK LLC Physical U.S. address of agent: 16009 Camino De La Cantera Irwindale California United States FRN of U.S. agent: 0035757913 Email address of U.S. agent: [email protected] CLEESINK LLC acknowledges their obligation to accept service of process on behalf of CLEESINK LLC. CLEESINK LLC with the FRN [0035757913] accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(d)(7). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Sincerely, Signature Jinxing Wei Manager CLEESINK LLC Signature Jinxing Wei Manager CLEESINK LLC 48_[mo del] US_Agent_2.911(d)(7) - U, V0 5

CLEESINK LLC Add: 16009 Camino De La Cantera Irwindale California United States Date: 2024-8-3 FCC ID: 2BH3O-YDSNF002 Dear Sir/Madam, We, CLEESINK LLC Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: sauna room Model no.: YDSNF002, YDSNF004, YDSNF006, YDSNF008, YDSNF010, YDSNF012 Sincerely, Name/Title： Jinxing Wei/Manager Company: CLEESINK LLC Address: 16009 Camino De La Cantera Irwindale California United States Phone: (917) 373-0536 Fax: N/A E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2024-8-3> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2BH3O-YDSNF002 YDSNF002 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Jinxing Wei/Manager Company: CLEESINK LLC Address: 16009 Camino De La Cantera Irwindale California United States Phone: (917) 373-0536 Fax: N/A E-Mail: [email protected]

CLEESINK LLC 16009 Camino De La Cantera Irwindale California United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-8-3 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2BH3O-YDSNF002 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins’ current valid General Terms and Conditions (AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Jinxing Wei/Manager Company: CLEESINK LLC Address: 16009 Camino De La Cantera Irwindale California United States Phone: (917) 373-0536 Fax: N/A E-Mail: [email protected]

FCC ID: 2BH3O-YDSNF002 External Photos of the EUT FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002

Label and Location Size: L: 3.0cm*W: 2.0cm Label and Location FCC ID : 2BH3O-YDSNF002

FCC ID: 2BH3O-YDSNF002 Internal Photos of the EUT FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 FCC ID: 2BH3O-YDSNF002 ANT FCC ID: 2BH3O-YDSNF002

RF Exposure evaluation FCC ID: 2BH3O-YDSNF002 Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device 1. Reference According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. Antenna Information YDSNF002 can only use antennas certificated as follows provided by manufacturer; Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: BT / PCB antenna 0.58dBi for 2400-2500MHz; 5. Manufacturing Tolerance BT GFSK(Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -1.0 -3.0 -4.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4DQPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -1.0 -2.0 -3.0 Tolerance ±(dB) 1.0 1.0 1.0 8DPSK (Peak) Channel Channel 00 Channel 39 Channel 78 Target (dBm) -1.0 -2.0 -3.0 Tolerance ±(dB) 1.0 1.0 1.0 BLE GFSK(Peak) Channel Channel 00 Channel 19 Channel 39 Target (dBm) 2.0 0.0 0.0 Tolerance ±(dB) 1.0 1.0 1.0 6. Standalone MPE Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna is 0.58dBi, the RF power density can be obtained. Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW BT 0.0 1.0000 0.58 1.1429 0.0002 1.0000 BLE 3.0 1.9953 0.58 1.1429 0.0005 1.0000 Remark: 1. Output power (Peak) including turn-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer. 7. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT---------------

1. Antenna Description: Antenna type PCB antenna Model YDSNF002 Frequency range 2400-2500MHz Manufacturer CLEESINK LLC ANT Peak Gain 0.58 dBi 2. Antenna Photo: Length: 14.81mm Width: 5.67mm 3. Test Equipment & Conditions 3.1 Test instrument VSWR is tested using Agilent E5071B connected to a hand mechanism, and the status is free space. 3.2 Test environment and methods 4．Antenna Radiation Pattern 2400MHz 2450MHz 2500MHz

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No. ..................... : FCC ID............................................. : CTA24070901602 2BH3O-YDSNF002 Compiled by ( position+printed name+signature) . : File administrators Jinghua Xiao Supervised by ( position+printed name+signature) . : Project Engineer Xudong Zhang Approved by ( position+printed name+signature) . : RF Manager Eric Wang Date of issue .................................... : Jul. 17, 2024 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao‘an District, Shenzhen, China Applicant’s name ............................ : CLEESINK LLC Address ............................................ : 16009 Camino De La Cantera Irwindale CA 91702-2852 US Test specification ........................... : Standard ........................................... : FCC Part 15.247 Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description ..................... : sauna room Trade Mark ....................................... : N/A Manufacturer .................................... : CLEESINK LLC Model/Type reference ...................... : YDSNF002 Listed Models .................................. : YDSNF004, YDSNF006, YDSNF008, YDSNF010, YDSNF012 Modulation ....................................... : GFSK, Π/4DQPSK, 8DPSK Frequency ......................................... From 2402MHz to 2480MHz Rating ............................................... : AC 100-240V, 50/60Hz Result ............................................... : PASS Report No.: CTA24070901602 Page 2 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : sauna room Model /Type : YDSNF002 Listed Models : YDSNF004, YDSNF006, YDSNF008, YDSNF010, YDSNF012 Applicant : CLEESINK LLC Address : 16009 Camino De La Cantera Irwindale CA 91702-2852 US Manufacturer : CLEESINK LLC Address : 16009 Camino De La Cantera Irwindale CA 91702-2852 US Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA24070901602 Page 3 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y ............................................................................ 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 5 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Summary of measurement results 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 11 AC Power Conducted Emission 11 4.1 Radiated Emission 14 4.2 Maximum Peak Output Power 20 4.3 20dB Bandwidth 21 4.4 Frequency Separation 25 4.5 Number of hopping frequency 27 4.6 Time of Occupancy (Dwell Time) 29 4.7 Out-of-band Emissions 33 4.8 Pseudorandom Frequency Hopping Sequence 42 4.9 Antenna Requirement 43 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 44 6 P H O T O S O F T H E E U T ........................................................... 45 Report No.: CTA24070901602 Page 4 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R D S The tests were performed according to following standards: FCC Rules Part 15.247: Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz. ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices Report No.: CTA24070901602 Page 5 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Jul. 09, 2024 Testing commenced on : Jul. 09, 2024 Testing concluded on : Jul. 17, 2024 2.2 Product Description Product Name: sau…

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Report No.: CTA24070901602 Page 36 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn π/4DQPSK (CH39) π/4DQPSK (CH78) reference reference 30MHz-1G 30MHz-1G 1G-25G 1G-25G Report No.: CTA24070901602 Page 37 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 8DPSK (CH00) 8DPSK (CH39) reference reference 30MHz-1G 30MHz-1G 1G-25G 1G-25G Report No.: CTA24070901602 Page 38 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 8DPSK (CH78) reference 30MHz-1G 3G-25G Report No.: CTA24070901602 Page 39 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Band-edge Measurements for RF Conducted Emissions: GFSK Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Report No.: CTA24070901602 Page 40 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn π/4DQPSK Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Report No.: CTA24070901602 Page 41 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 8DPSK Left Band edge hoping off Right Band edge hoping off Left Band edge hoping on Right Band edge hoping on Report No.: CTA24070901602 Page 42 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 4.8 Pseudorandom Frequency Hopping Sequence TEST APPLICABLE For 47 CFR Part 15C section 15.247 (a) (1) requirement: Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hop-ping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400–2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 125 mW. The system shall hop to channel frequencies that are selected at the system hopping rate from a pseudo randomly ordered list of hopping frequencies. Each frequency must be used equally on the average by each transmitter. The system receivers shall have input bandwidths that match the hop-ping channel bandwidths of their corresponding transmitters and shall shift frequencies in synchronization with the transmitted signals. EUT Pseudorandom Frequency Hopping Sequence Requirement The pseudorandom frequency hopping sequence may be generated in a nice-stage shift register whose 5 th and 9 th stage outputs are added in a modulo-two addition stage. And the result is fed back to the input of the first stage. The sequence begins with the first one of 9 consecutive ones, for example: the shift register is initialized with nine ones. ● Number of shift register stages:9 ● Length of pseudo-random sequence:29-1=511 bits ● Longest sequence of zeros:8(non-inverted signal) An example of pseudorandom frequency hopping sequence as follows: Each frequency used equally one the average by each transmitter. The system receiver have input bandwidths that match the hopping channel bandwidths of their corresponding transmitter and shift frequencies in synchronization with the transmitted signals. Report No.: CTA24070901602 Page 43 of 45 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 4.9 Antenna Requirement Standard Applicable For intentional device, according to FCC 47 CFR Section 15.203, an intentional radiator shall be designed to ensure that no antenna other than that furnished by the responsible party shall be used with the device. And according to FCC 47 CFR Section 15.247 (c), if transmitting antennas of directional gain greater than 6dBi are used, the power shall be reduced by the amount in dB that the directional gain of the antenna exceeds 6dBi. Refer to statement below for compliance The manufacturer may design the unit so that the user can replace a broken antenna, but the use of a standard antenna jack or electrical connector is prohibited. Further, this requirement does not apply to intentional radiators that must be prof…

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