2AC66DUOX92.4 GHz Wireless Keyboard

FCC INFORMATION 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. 2. 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. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment.

JUSTDO (HK)LIMITED

JUSTDO (HK) LIMITED FCC Confidentiality Request Number: CF303 Version: V04 Date: 01-12-2011 (Permanent or also called long term confidentiality is the normal method to keep certain docuements confidential, and may apply to schematics, block diagrams, operational description and bill of materials. With Short term confidentiality, a period of max. 180 days on certain additional exhibits are possible, such as internal/external photos, user manual can test setup photosbet. After expiration of the confidentiality period, these additional exhibits for short term confidentiality become visible in the FCC database for the internet public.) To: Federal Communications Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 Pursuant to 47 CFR Section 0.459(a) & (b), we, (the applicant / grantee) Company nameJUSTDO (HK)LIMITED AddressJun Xing Industrial Park, Second Fuyuan Road, Fuyong, Baoan CityShenzhen CountryChina request for this certification filing under: Grantee CodeProduct Number FCC ID:2AC66DUOX09 to maintain permanent confidentiality for the following documents submitted within this application: (please cross what is applicable, or add other documents, provide the file name and description) ExhibitFile NameDescription xOperational Descriptionexplaining the functioning of the block diagram xBlock Diagramsshowing the systematic building blocks of the EUT xSchematics Diagramsshowing components, their values and interconnection Bill of MaterialsList of components used on the PCB’s of the EUT no short term confidentiality requested for this application (remark: do not fill in exhibits below, please skip the table below). short term confidentiality is requested for 180 days for the following documents submitted within this application: (please cross what is applicable, or add other documents, provide the file name and description) ExhibitFile NameDescription Internal photospictures showing internal views of the EUT External photospictures showing external views of the EUT User ManualInstructions and information for the end-user Test Setup PhotosPhotos of conducted and radiated emission test setup Above materials crossed contain secrets, proprietary and technical information, which would customarily be guarded from competitors under 47 CFR, section 0.457(d)(2). Disclosure or publication or any portion of this company confidential material to other parties could cause substantial competitive harm and provide unjustified benefits for competitors. We understand that pursuant to 47 CFR section 0.457(d)(1)(ii) disclosure of the applicant and all accompanying documentation will not be made before the date of the grant. The documents indicated as confidential above, are not publicly available elsewhere. Attestation: City and Country:Date:Name: (this must be a person) Function:Signature: (or official company stamp) Shenzhen, China2014-09-11Aaron Wongengineer

External Photographs EUT –Front View EUT – Rear View

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.

Internal Photographs EUT ‐ Open View EUT ‐ PCB View Antenna Location

Test Report of FCC Part 15 C for FCC Certificate On Behalf of JUSTDO （HK）LIMITED FCC ID: 2AC66DUOX9 Product Description: 2.4GHz wireless keyboard Model No.: ACHIEVER DUO X9 Prepared for: JUSTDO （HK）LIMITED Jun Xing Industrial Park, Second Fuyuan Road, Fuyong, Baoan, Shenzhen, P.R.China Prepared by: Shenzhen QC Testing Laboratory Co., Ltd. 1stFloor,Building A, Huawan Industrial Park, Gushu,Xixiang Street, Baoan,518126,Shenzhen,China Tel: 0755-23008269 Fax: 0755-23726780 Report No.: QCT14IR010E Issue Date: September 12, 2014 Test Date: September 08~11, 2014 Tested by: Reviewed by: Kare Gao Carmi Du Approved by: Kendy Wang Report No.: QCT14IR010E Page 2 of 25 FCC ID: 2AC66DUOX9 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................. 3 1.1 Client Information ....................................................................................................................... 3 1.2 Related Submittal(s) / Grant (s) ................................................................................................. 3 1.3 Test Methodology ...................................................................................................................... 3 1.4 Test Facility ................................................................................................................................ 4 2. SYSTEM TEST CONFIGURATION ..................................................................................................... 5 2.1 EUT Configuration ..................................................................................................................... 5 2.2 EUT Exercise ............................................................................................................................. 5 2.3 General Test Procedures .......................................................................................................... 5 2.4 List of Measuring Equipments ................................................................................................... 6 3. SUMMARY OF TEST RESULTS ......................................................................................................... 7 4. TEST OF CONDUCTED EMISSION ................................................................................................... 8 4.1 Applicable Standard ................................................................................................................... 8 4.2 Test Setup Diagram ................................................................................................................... 8 5. BAND EDGES MEASUREMENT ........................................................................................................ 9 5.1 Limit of Band Edges Measurement .......................................................................................... 9 5.2 Radiate EUT Setup .................................................................................................................... 9 5.3 Test Procedure ........................................................................................................................ 10 5.4 Test Result ............................................................................................................................... 10 6. SPURIOUS EMISSIONS.................................................................................................................... 12 6.1 Limit of Spurious Emissions .................................................................................................... 12 6.2 EUT Setup ............................................................................................................................... 13 6.3 Test Procedure ........................................................................................................................ 14 6.4 Spurious Emissions Test Result .............................................................................................. 15 7. ANTENNA REQUIREMENT .............................................................................................................. 25 7.1 Standard Applicable ................................................................................................................. 25 7.2 Antenna Connected Construction ........................................................................................... 25 Report No.: QCT14IR010E Page 3 of 25 FCC ID: 2AC66DUOX9 1. GENERAL INFORMATION 1.1 Client Information Applicant: JUSTDO （HK）LIMITED Address of applicant: Jun Xing Industrial Park, Second Fuyuan Road, Fuyong, Baoan, Shenzhen, P.R.China Manufacturer: JUSTDO （HK）LIMITED Address of manufacturer: Jun Xing Industrial Park, Second Fuyuan Road, Fuyong, Baoan, Shenzhen, P.R.China General Description of E.U.T Items Description EUT Description: 2.4GHz wireless keyboard Trade Name: N/A Model No.: ACHIEVER DUO X9 Frequency Band: 2402MHz ~ 2480MHz Number of Channels: 16 Channel Bandwidth: 1MHz Antenna Type: Built-in Antenna Rated Voltage: 3. 0V DC from battery Remark* The test data gathered are from the production sample provided by the manufacturer. Supplementary models have the same circuit, but with different appearance 1.2 Related Submittal(s) / Grant (s) This submittal(s) is a test report based on the Electromagnetic Interference (EMI) tests performed on the EUT. The EMI measurements were performed according to the measurement procedure described in ANSI C63.4 - 2009. The tests were performed in order to determine compliance with Section 15.107 and 15.109 under the FCC Rules Part 15 Subpart B and Section 15.207, 15.209,15.249 under the FCC Rules Part 15 Subpart C. 1.3 Test Methodology Both conducted and radiated testing were performed according to the procedures in ANSI C63.4 - 2009, American National Standard for Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the range of…

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Radiated emission below 30MHz Radiated emission 30MHz to 1GHz Radiated emission above 1GHz