YEBSM500WIRELESS MICROPHONE

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. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user’s authority to operate the equipment. 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.

OPALUX ELECTRONICS MFY CO., LTD FCC ID: YEBSM500 POWER OF ATTORNEY May 5, 2010 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, OPALUX ELECTRONICS MFY CO., LTD, hereby authorize Most Technology Service Co., Ltd. (Terry YANG/ Manager) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Most Technology Service Co., Ltd. (Terry YANG/ Manager) on our behalf shall have the same effect as acts of our own. This authorization expires on May 28, 2010. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, OPALUX ELECTRONICS MFY CO., LTD are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Name: Fu Jun Title: General Manager Date: May 5, 2010

FCC ID: YEBSM500 Report No.:MOST100407F1 FRONT VIEW OF SAMPLE BACK VIEW OF SAMPLE FCC ID: YEBSM500 Report No.:MOST100407F1 TOP VIEW OF SAMPLE BOTTOM VIEW OF SAMPLE

FCC ID: YEBSM500 Report No.:MOST100407F1 INTERNAL PHOTO OF SAMPLE – 1 INTERNAL PHOTO OF SAMPLE - 2 FCC ID: YEBSM500 Report No.:MOST100407F1 INTERNAL PHOTO OF SAMPLE - 3 INTERNAL PHOTO OF SAMPLE - 4

Operation Description Sound is input through MIC. After pre-amplified and noice compress, the signal will mix with FM carrier signal controlled by PLL circuit to form FM modulation signal. The FM modulation signal will be transmitted to sky after RF amplication circuit and antenna radiation Power is supplied by DC 9V battery, and the antenna is Internal.

SM-500元件清单 元件名称元件标值元件封装用量备注 18K1/16W2 12K1/16W2 101R1/16W8 22K1/16W10 10K1/16W10 100K1/16W6 2K21/16W18 331R1/16W7 150K1/16W2 470K1/16W2 3K31/16W6 47K1/16W6 47R1/16W4 VR2031/16W6 1K1/16W14 8MM1/16W5 1K51/16W2 电阻10R1/16W2 0.5P 5％/50V2 1P5％/50V2 2P5％/50V2 15P5％/50V2 104P5％/50V1 102P5％/50V2 103P5％/50V44 102J5％/50V2 103J5％/50V2 201P5％/50V2 203P5％/50V6 39P5％/50V2 5P5％/50V4 电容7P5％/50V2 100U20％/35V3 1000U20％/35V1 10U20％/50V2 1U20％/50V2 4U720％/50V7 47U20％/35V3 2200U20％/16V1 电解电容2U220％/50V8 T17167.5*7.5*12.52 T17187.5*7.5*12.52 T15507.5*7.5*12.510 1UH10%2 电感0.68UH10%2 4148DO-358 C9014TO9213 BF96SOT-1032 C1674TO922 LED#35 LA1186DIP-92 LA1235DIP162 NE571DIP161 LM4558DIP82 二极管7812221A1 三极管10.7MSOSC2 ICXTAL49T2 天线座2 电源插座1 锣丝1套 天线2 电位器B10K2 机箱SM-5001 DF-112A2 DF-113A2 PCB板JM-500A1 电位器线2 RF线4 机箱SM-5001套 铝箱SM-5001套 电池9V2 说明书SM-5001 电源器15V-DC400mA1 面板SM-5001 机脚4 开关1 咪管2 网头2 铝头2 6.35插座1 旋钮2

Tune Up Description Product WIRELESS MICROPHONE Brand Name OPALUX Model Number SM500 Power Supply DC 9 V by Battery Frequency Range 205.75 MHz Modulation Technique FM Channel Number 1 Antenna Gain 1.0 dBi Antenna Type Internal Temperature Range -10°C-40°C

Page 1 of 33 FCC 47 CFR PART 74 SUBPART H TEST REPORT For Applicant : OPALUX ELECTRONICS MFY CO., LTD Address : 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Product Name : WIRELESS MICROPHONE Model Name : SM500,U660,SX4,BG4,SM92,SM9090,SM550,SM6060,SM2000, DM306,DM201 Brand Name : OPALUX, XSOUND, GEMINI, INTERNSOUND, GRAMMAR SOUND FCC ID : YEBSM500 Report No. : MOST100407F1 Date of Issue : April 30, 2010 Issued by : Most Technology Service Co., Ltd. Address : No.5, 2nd Langshan Road, North District, Hi-tech Industrial Park, Nanshan, Shenzhen, Guangdong, China Tel : 86-755-8617 0306 Fax : 86-755-8617 0310 The report consists 33 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should no t be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim produc t endorsement by MOST. The test results in the report only apply to the tested sample. The test report shall be invalid without all the signatures of testing engineers, reviewer and approver. FCC ID: YEBSM500 Report No.:MOST100407F1 Page 2 of 33 CONTENTS 1. TEST RESULT CERTIFICATION ..................................................................................................3 2. Technical Information..................................................................................................................4 2.1 EUT Description ............................................................................................................................4 2.2 Objective........................................................................................................................................5 2.3 Test Standards and Results ...........................................................................................................5 3. Details of Test ..............................................................................................................................6 3.1 Identification of the Responsible Testing Laboratory .....................................................................6 3.2 Identification of the Responsible Testing Location .........................................................................6 3.3 List of Test Equipments..................................................................................................................7 3.4 Environmental Conditions..............................................................................................................8 4. Test Methodology ........................................................................................................................9 4.1 General Test Procedures ...............................................................................................................9 4.2 Description of Test Modes .............................................................................................................9 5. FCC Part 74 Requirements .......................................................................................................10 5.1 RF Output Power (Radiated) .......................................................................................................10 5.2 Modulation Deviation ...................................................................................................................13 5.3 Audio Frequency Response ........................................................................................................15 5.4 Occupied Bandwidth....................................................................................................................18 5.5 Radiated Spurious Emission........................................................................................................20 5.6 Frequency Stability vs. Temperature............................................................................................25 5.7 Frequency Stability vs. Voltage ....................................................................................................26 Annex A.................................................................................................................................................27 Photographs of the Test Setup ...........................................................................................................27 Annex B........................................................................................................................ .........................29 Photographs of the EUT ......................................................................................................................29 FCC ID: YEBSM500 Report No.:MOST100407F1 Page 3 of 33 1. TEST RESULT CERTIFICATION Applicant Name: OPALUX ELECTRONICS MFY CO., LTD Address: 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Manufacturer Name: OPALUX ELECTRONICS MFY CO., LTD Address: 21F, No.86 LONGWAN NEW RESIDENTIAL QUARTERS, NINGBO, CHINA Brand Name: OPALUX, XSOUND, GEMINI, INTERNSOUND, GRAMMAR SOUND Equipment Under Test: WIRELESS MICROPHONE Model Number: SM500, U660, SX4, BG4, SM92, SM9090, SM550, SM6060, SM2000, DM306, DM201 Series Model Difference description: The series models are different in market name with the same functions and the same PCB. FCC ID： YEBSM500 Test Standard FCC 47 CFR Part 74 Subpart H File Number: MOST100407F1 Date of Test: April 17, 2010 - April 30, 2010 We (MOST) hereby certify that: The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI TIA 603:2004 and the energy emitted by the sample EUT tested as described in this report is in compliance with radiated emission limits of FCC Rules Part 74 H. The test results of this report relate only to the tested sample identified in this report. Tested by (+ signature): Candy Zhang April 30, 2010 Review by (+ signature): Sam Zhong April 30, 2010 Approved by (+ signature): Yvette Zh…

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FCC ID: YEBSM500 Report No.:MOST100407F1 Page 34 of 39 Radio Emission Setup Photo