2ACRG-39857F27RC ROBO DRONE

Data: May 25, 2015 To whom it may concern, Request for Permanent Confidentiality Under FCC Part 15 Certification FCC ID: Request is hereby submitted by from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR § 0.457(d) and 0.459 of the FCC Rules. In particular, the foll of the application are to be kept permanently confidential and Asia Ltd reserves the right to discern which parties can information: Schematics Detailed Block diagrams Detailed Operational/Functional Description The rationale for request for confidentiality is as followings: This information represents intellectual property of is subject to competition. We have invested considerable time and materials in research and development to produce the referenced prod permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leadin technology developed by us. If you have questions or need further information, please contact the undersigned. To whom it may concern, Request for Permanent Confidentiality Under FCC Part 15 Certification FCC ID: _2ACRG-39857F27__ Request is hereby submitted by Echo Technologies Asia Ltd to withho from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR § 0.457(d) and 0.459 of the FCC Rules. In particular, the foll of the application are to be kept permanently confidential and Echo Technologies reserves the right to discern which parties can obtain access to these Detailed Block diagrams Detailed Operational/Functional Description The rationale for request for confidentiality is as followings: This information represents intellectual property of Echo Technologies Asia Ltd is subject to competition. We have invested considerable time and materials in research and development to produce the referenced product. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leadin technology developed by us. If you have questions or need further information, please contact the undersigned. to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR § 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections Echo Technologies obtain access to these Technologies Asia Ltd and it is subject to competition. We have invested considerable time and materials in uct. Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge If you have questions or need further information, please contact the undersigned.

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Label Artwork and Location SIZE: 46mm (W) x 12mm (H)

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1 INTERTEK TESTING SERVICES Analysis Report The equipment under test (EUT) is a portable transmitter for a RC ROBO Drone operating at 27.145 MHz which is controlled by a crystal. The EUT is powered by a 9.0V size 6F22 battery. For more detail information pls. refer to the user manual. Antenna Type: Integral antenna Antenna Gain: 0dBi The nominal conducted output power specified: -27.0dBm (+/- 3dB) The nominal radiated output power (e.r.p) specified: -29.15dBm (+/- 3dB) Modulation Type: Pulse modulation According to the KDB 447498: The worst-case peak radiated emission for the EUT is 68.2dBμV/m at 3m in the frequency 27.145MHz The EIRP = [(FS*D) ^2 / 30] mW= -27.03dBm The ERP = EIRP – 2.15 = -29.18 dBm which is within the production variation. The maximun conducted output power specified is -24dBm =0.004mW The source- based time-averaging conducted output power = 0.004* Duty Cycle mW < 0.1mW (Duty Cycle<100%) The SAR Exclusion Threshold Level for 27.145MHz when the minimum test separation distance is < 50mm: = 474 * [1 + log(100/f(MHz)]/2 = 371.2 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing. Transmitter Duty Cycle Calculation The duration of one cycle = 17.9710ms Effective period of the cycle = 492.8μs x 10 + 1.5362ms x 4 = 11.0728ms DC = 11.0728ms / 17.9710 ms = 0.6161 or 61.61% FCC ID: 2ACRG-39857F27

• The test results reported in this test report shall refer only to the sample actually tested and shall not refer or be deemed to refer to bulk from which such a sample may be said to have been obtained. • This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to copy or distribute this report. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results referenced from this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. • For Terms And Conditions of the services, it can be provided upon request. • The evaluation data of the report will be kept for 3 years from the date of issuance. TRF No.: FCC 15C_TX_b Intertek Testing Services Shenzhen Ltd. Kejiyuan Branch 6F, D Block, Huahan Building, Langshan Road, Nanshan District, Shenzhen, P. R. China Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 ECHO ECHNOLOGIES ASIA LTD Application For Certification FCC ID: 2ACRG-39857F27 RC ROBO DRONE Model: 39857(27MHz) Transmitter Report No.: SZHH00962323-001 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-13] Prepared and Checked by: Approved by: Sign on file Abel Zhou Assistant E ngineer Andy Yan Senior Project Engineer Date: June 12, 2015 INTERTEK TESTING SERVICES Report No.: SZHH00962323-001 FCC ID: 2ACRG-39857F27 TRF No.: FCC 15C_TX_b i GENERAL INFORMATION ECHO ECHNOLOGIES ASIA LTD MODEL: 39857(27MHz) FCC ID: 2ACRG-39857F27 Grantee: ECHO ECHNOLOGIES ASIA LTD Grantee Address: 8/F 601-603 TAI NAN WEST STREET KOWLOON HONG KONG Contact Person: Sylvia Wong Tel: 13928395087 Manufacturer: ECHO ECHNOLOGIES ASIA LTD Manufacturer Address: 8/F 601-603 TAI NAN WEST STREET KOWLOON HONG KONG Model: 39857(27MHz) Type of EUT: Transmitter Description of EUT: RC ROBO DRONE Serial Number: N/A FCC ID : 2ACRG-39857F27 Date of Sample Submitted: May 28, 2015 Date of Test: June 9, 2015 Report No.: SZHH00962323-001 Report Date: June 12, 2015 Environmental Conidtions: Temperature: +10 to 40°C Humidity: 10 to 90% INTERTEK TESTING SERVICES Report No.: SZHH00962323-001 FCC ID: 2ACRG-39857F27 TRF No.: FCC 15C_TX_b ii SUMMARY OF TEST RESULT ECHO ECHNOLOGIES ASIA LTD MODEL: 39857(27MHz) FCC ID: 2ACRG-39857F27 TEST SPECIFICATION REFERENCE RESULTS Maximum Peak Output Power 15.247(b), (c) / RSS-210 A8.4 N/A Hopping Channel Carrier Frequencies Separation (for 2.4GHz Digital) 1 5.247(e) / RSS-210 A8.1 N/A 20dB Bandwidth of the Hopping Channel 15.247(a) / RSS-210 A8.1 N/A Number of Hopping Frequencies 15.247(e) / RSS-210 A8.1 N/A Average Time of Occupancy of Hopping Frequency 15.247(e) / RSS-210 A8.1 N/A Anteann Conducted Spurious Emissions 15.247(d) / RSS-210 A8.5 N/A Radiated Spurious Emissions 15.247(d) / RSS-210 A8.5 N/A RF Exposure Compliance 15.247(i) / RSS-Gen 5.5 N/A Transmitter Power Line Conducted Emissions 15.207 / RSS-Gen 7.2.2 N/A Transmitter Field Strength (for 27MHz) 15.227 / RSS-310 3.8 Pass Transmitter Field Strength (for 40MHz) 15.229 / RSS-210 A2.7 N/A Transmitter Field Strength, Bandwidth and Timing Requirement (for Remote Control) 1 5.231(a) / RSS-210 A1.1.1 N/A Transmitter Field Strength, Bandwidth and Timing Requirement (for 433MHz) 1 5.231(e) / RSS-210 A1.1.5 N/A Transmitter Field Strength and Bandwidth Requirement(for 88-108MHz) 15.239 / RSS-210 A2.8 N/A Transmitter Field Strength and Bandwidth Requirement(for 902- 928MHz or 2.4GHz) 15.249 / RSS-210 A2.9 N/A Transmitter Field Strength and Bandwidth Requirement (for 49MHz) 1 5.235 / RSS-310 3.9 N/A Receiver / Digital Device Radiated Eissions 15.109 / ICES-003 N/A Digital Device Conducted Emissions 15.107 / ICES-003 N/A Note: 1. The EUT uses an integral antenna, in accordance to section 15.203, is considered sufficient to comply with the pervisions of this section. 2. Pursuant to FCC part 15 Section 15.215(c), the 20 dB bandwidth of the emission was contained within the frequency band designated (mentioned as above) which the EUT operated. The effects, if any, from frequency sweeping, frequency hopping, other modulation techniques and frequency stability over excepted variations in temperature and supply voltage were considered. INTERTEK TESTING SERVICES Report No.: SZHH00962323-001 FCC ID: 2ACRG-39857F27 TRF No.: FCC 15C_TX_b iii Table of Contents 1.0 General Description ....................................................................................... 1 1.1 Product Description .......................................................................................... 1 1.2 Related Submittal(s) Grants.............................................................................. 1 1.3 Test Methodology ............................................................................................. 1 1.4 Test Facility ...................................................................................................... 1 2.0 System Test Configuration ............................................................................ 2 2.1 Justification ...................................................................................................... 2 2.2 EUT Exercising Software .................................................................................. 2 2.3 Special Accessories ......................................................................................... 2 2.4 Equipment Modification …

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Radiated Emission