OD9VBC-239VIDEO BABY MONITOR

FCC Notice To Users Techwall is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the user authority to operate the 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.

1 2 3 4 56 ABCD 6 5 4 3 2 1 D CBA Title Number Revision Size B Date: 15-Aug-2007 Sheet of File: D:\MyDesign.ddb Drawn By: 900MHZ VCO900MHZ PLL RF AMP CMOS camera devices MIC MIC AMP ALC LFP 6.5MHz OSC&MOD BUFFER AMP SOUND DET MCU DC IN BATTERY 6v 5V BATTERY DET ANTENNA VBC-239 TX BLOCK DIAGRAM POWER SUPPLY CONTROL 4.5V 5V TX DATA IC1(OV6910) Q14 IC6(FS8170) Q16 IC4 Q2 IC5 Q3 Q17 D7 Q12 Q13 Q15 Q7 IC1 IC2 IC3 FK-38TX-A DAI CHONG ZHOU A X1(oscillators)X2(oscillators) Y1(oscillators)

Date: August 15, 2007 Equipment Authorization Division Office of Engineering and Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: Techwall Electronics Co., Ltd.requests acceptance of the labeling proposal described below for two-way radio bearing FCC ID: OD9VBC-239. The subject video baby monitor are compact handheld models as shown in below, authorized under 47CFR Part 15 for Low Power Communication Device. Because the video baby monitor housing is composed of monitor, speaker, operating controls, and a removable battery pack, there is extremely limited space available to attach the required label carrying the FCC ID. Attaching the label to the battery pack is not acceptable because the battery pack is a removable item. For this reason, Techwall proposes placing the label carrying the FCC ID inside the battery compartments as shown in below. The consumer packaging for these models includes the battery pack as a separate item, NOT installed on the radio. As such, the FCC identifier will be readily visible to the user before the battery pack is installed and whenever the battery pack is removed or replaced. In this location, the label will also be protected from physical abuse and remain readable for the anticipated life of the device. The consumer packaging does not allow the Video baby monitor to be seen at time of purchase. In order to meet the requirements of 47CFR Part 2.925 (d), Techwall will add the FCC ID "OD9VBC-239" to the outside of the consumer packaging. Sincerely, S M Wong / Director FCC ID: OD9VBC-239

EUT top view EUT bottom 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. The Label must not be a stick-on paper label. The Label on these products must be permanently affixed to the product and readily visible at the time of purchase and must last the expected lifetime of the equipment not be readily detachable. Proposed Label Location on EUT EUT Bottom View/Proposed FCC ID Label Location FCC ID: OD9VBC-239

EUT inside whole view Main & RF board component side Main & RF board solder side

-The video camera outputs audio signals and video signals to transmitter -The audio signals will be mixed with intermediate frequency of 6.5MHz of the transmitter -The processed audio signals together with the video signals are modulated to 900MHz, then amplified to RF output. -Phase lock loop circuitry is employed to stabilize the transmitted frequency. ( The principle is to detect output, when the transmitted frequency is deviated from the designated value, the phase lock loop circuitry will send out a control signal to change the oscillating frequency to stabilize the transmitted frequency).

The test report consists 27 pages in total. It may be duplicated completely for legal use with the allowance of the applicant. It shall not be reproduced except in full, without the written approval of Ke Mei Ou Laboratory Corporation. The test result in the report only applied to the tested sample. FCC TEST REPORT Under FCC 15 Subpart C, Paragraph 15.249: 2003 Prepared For : Techwall Electronics Co., Ltd. 24/F, Tern Center, Tower 1, 237, Queen’s Road Central, Hong Kong August 8, 2007 FCC ID: OD9VBC-239 EUT: Video Baby Monitor Model: VBC-239 Report Type: Original Report Test Engineer: Jacky Huang Test Date: August 1, 2007 Review By: Apollo Liu / Manager Ke Mei Ou Laboratory Co., Ltd. 7A, Jiaxiangge, Jiahuixincheng, No.3027, Shennan Rd., Futian, Shenzhen, Guangdong, P.R.China. Zip Code: 518033 Tel: + 86 755 83642690 Fax: + 86 755 83297077 www.kmolab.com Techwall Electronics Co., Ltd. FCC ID: OD9VBC-239 KMO FCC ID Report Report #: KSZ2007072101J Page 2 of 27 TABLE OF CONTENTS 1. General Information....................................................................................................................................................3 1. 1 Notes......................................................................................................................................................................3 1. 2 Testing Laboratory..................................................................................................................................................3 1. 3 Details of Applicant................................................................................................................................................3 1. 4 Application Details..................................................................................................................................................3 1. 5 Test Item.................................................................................................................................................................3 1. 6 Test Standards.........................................................................................................................................................3 2. Technical Test...............................................................................................................................................................4 2. 1 Summary of Test Results.........................................................................................................................................4 3. EUT Modifications.......................................................................................................................................................4 4. Conducted Power Line Test.........................................................................................................................................5 4. 1 Test Equipment.......................................................................................................................................................5 4. 2 Test Procedure........................................................................................................................................................5 4. 3 Test Setup...............................................................................................................................................................5 4. 4 Configuration of the EUT........................................................................................................................................6 4. 5 EUT Operating Condition........................................................................................................................................7 4. 6 Conducted Power Line Emission Limits..................................................................................................................7 4. 7 Conducted Power Line Test Result...........................................................................................................................8 5. Radiated Emission Test..............................................................................................................................................10 5. 1 Test Equipment.....................................................................................................................................................10 5. 2 Test Procedure......................................................................................................................................................10 5. 3 Radiated Test Setup...............................................................................................................................................10 5. 4 Configuration of the EUT......................................................................................................................................11 5. 5 EUT Operating Condition......................................................................................................................................11 5. 6 Radiated Emission Limit.......................................................................................................................................11 5. 7 Radiated Emission Test Result...............................................................................................................................12 6. Band Edge..................................................................................................................................................................14 6. 1 Test Equipment.....................................................................................................................................................14 6. 2 Test Procedure......................................................................................................................................................14 6. 3 Radiated Test Setup..................................................…

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Conducted emission test view Radiated emission test view