JGFDB016TXWireless Two Way Doorbell

ANT DB016( the outdoor unit): speaker Signal amplifier Filter Audio amplifier Power output Signal amplifier Oscillator Audio amplifier MIC Pilot tone90HZ Decoder reception Relay output Transmit

Helen Zhao Subject: FW: Invent-tech Enterprise Ltd., FCC ID: JGFDB016TX, Assessment NO.: AN04T4... 10/28/2004 -----Original Message----- From: Weili Sent: Wednesday, October 27, 2004 2:38 PM To: Helen Zhao Subject: Re: Invent-tech Enterprise Ltd., FCC ID: JGFDB016TX, Assessment NO.: AN04T4... Hi, Helen. For the questions 2- 5, I revised the report and user manual. Will send you the operational description asap. Regards, Wei -----Original Message----- From: Compliance Certification Services [mailto:[email protected]] Sent: Tuesday, October 26, 2004 3:20 PM To: Helen Zhao Subject: Invent-tech Enterprise Ltd., FCC ID: JGFDB016TX, Assessment NO.: AN04T4284, Notice#1 Question #1: Please provide Operational Description to brief describe the circuit functions of the device along with a statement describing how the device operates. Question #2: Based upon FCC15.215(c). "Intentional radiators operating under the alternative provisions to the general emission limits, as contained in §§ 15.217 through 15.257 and in Subpart E of this part, must be designed to ensure that the 20 dB bandwidth of the emission is contained within the frequency band designated in the rule section under which the equipment is operated." But the bandwidth plot provided in the test report shows the device does not comply with the requirement. Please explain. Question #3: The user manual indicates there is a power mode that an AC 12V/DC 12V adaptor is connected by two contact wires to "+" and "-" positions of the terminal block. Please provide additional conducted emission test data in this mode. Question #4: The user manual does not contain user information as required by FCC 15.21. Please revise the user manual. Question #5: Please provide external photos of AC/DC adaptor to show whether any special accessories (i.e. ferrite core) is used. Best regards, Helen Zhao The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information within 30 days of the original e-mail date may result in application dismissal and forfeiture of the filing fee. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the e-mail address listed below the name of the sender.

FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 20 Front View FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 21 Rear View AC/DC Adaptor for DB016: FCC ID: JGFDB016TX/JGFDB016RX

FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 8 2. PRODUCT LABELING Figure 2.2 Location of Label on the Side of EUT Figure 2.1 FCC ID Label Figure 2.2 FCC ID Label Location FCC ID: JGFDB016TX This device complies with part 15 of the FCC Rules. Operating 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. FCC Label

FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 22 Open View FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 23 Component Side FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 24 Foil Side

ELECTROMAGNETIC EMISSION COMPLIANCE REPORT of WIRELESS 2 WAY DOORBELL MODEL: DB-016 (Outdoor Unit) FCC ID: JGFDB016TX October 20, 2004 This report concerns (check one): Original grant x Class II change Equipment type: Low Power Intentional Radiator Deferred grant requested per 47 CF 0.457(d)(1)(ii)? yes no x If yes, defer until: (date) Company agrees to notify the Commission by (date) of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? yes no x If no, assumed Part 15, Subpart B for unintentional radiators - the new 47 CFR [10-1-90 Edition] provision. Report prepared for: Invent-Tech Enterprise Ltd. Report prepared by: Advanced Compliance Lab Report number: 0048-040810-02T The test result in this report IS supported and covered by the NVLAP accreditation 6 Randolph Way Hillsborough, NJ 08844 Tel: (908) 927 9288 Fax: (908) 927 0728 Advanced Compliance Laboratory FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 2 Table of Contents Report Cover Page.....................................................................................................1 Table of Contents.......................................................................................................2 Figures........................................................................................................................3 1. GENERAL INFORMATION................................................................................4 1.1 Verification of Compliance.......................................................................4 1.2 Equipment Modifications.........................................................................5 1.3 Product Information.................................................................................6 1.4 Test Methodology.....................................................................................6 1.5 Test Facility...............................................................................................6 1.6 Test Equipment........................................................................................6 1.7 Statement of the Document Use...............................................................7 2. PRODUCT LABELING........................................................................................8 3. SYSTEM TEST CONFIGURATION...................................................................9 3.1 Justification...............................................................................................9 3.2 Special Accessories....................................................................................9 3.3 Configuration of Tested System...............................................................9 4. SYSTEM SCHEMATICS......................................................................................12 5. CONDUCTED EMISSION DATA........................................................................13 5.1 Test Methods and Conditions..................................................................13 5.2 Test Data...................................................................................................14 6. RADIATED EMISSION DATA............................................................................16 6.1 Field Strength Calculation.......................................................................16 6.2 Test Methods and Conditions..................................................................16 6.3 Test Data...................................................................................................16 7. PHOTOS OF TESTED EUT.................................................................................19 FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 3 Figures Figure 2.1 FCC ID Label..........................................................................................8 Figure 2.2 Location of Label on Back of the EUT....................................................8 Figure 3.1 Radiated Test Setup, Position 1...............................................................10 Figure 3.2 Radiated Test Setup, Position 2...............................................................10 Figure 3.3 Radiated Test Setup, Position 3...............................................................11 Figure 3.4 Conducted Test Setup..............................................................................11 Figure 4.1 EUT Schematics.......................................................................................12 Figure 5.1 Line Conducted........................................................................................14 Figure 5.2 Neutral Conducted...................................................................................15 Figure 6.1 Bandwidth Plot.........................................................................................18 Figure 7.1 Front View................................................................................................20 Figure 7.2 Rear View.................................................................................................21 Figure 7.3 Inside View, Cover Opened......................................................................22 Figure 7.4 Component Side.......................................................................................23 Figure 7.5 Foil Side....................................................................................................24 FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 4 1. GENERAL INFORMATION 1.1 Verification of Compliance EUT: Wireless 2 Way Doorbell Model: DB-016 (Outdoor Unit) Applicant: Invent-Tech Enterprise Ltd. Flat E, 2/F., 459-469 Castle Peak Rd., Tsuen Wan N.T., Hong Kong Test Type: FCC Part 15C CERTIFI…

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FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 10 Figure 3.1 Radiated Test Setup, Position X-TX w/AC Figure 3.2 Radiated Test Setup, Position Y-TX w/ Battery Box FCC ID: JGFDB016TX Advanced Compliance Lab, 6 Randolph Way, Hillsborough, NJ 08844 Tel: (908) 927-9288 Fax: (908) 927-0728 11 Figure 3.3 Radiated Test Setup, Position Z-TX Only Figure 3.3 Conducted Test Setup