S8AJWGKDLWireless Door Chime (315MHz Rx)

Wireless Door Chime DB-1132 Manual of Wireless Doorbell Replacing battery: X Please follow the diagram (1) on the right to insert batteries. DIAGRAM 1 Tone Setting X The switch (MUSIC SEL) can be used to set up to 4 musical modes such as Ding-Dong ;Ding-Ding; Song of Alice and Song of Westminster. If you like to switch the modes, you only need to hold the button (MUSIC SEL) for 2 seconds after the previous one finished. To adjust the volume, please tune the button(VOL) by a flat blade screwdriver.<Ref to the diagram (2) for reference> DIAGRAM 2 Code Setting X The code is set by the manufacturer, and there are combinations of codes up to 256. In order to avoid the interference, you can set the code by adding or removing jumpers of the doorbell. Please make sure that the code setting of the transmitter must match with that of the receiver.Eg. If the code of the receiver is 6,7,8 ;the code of the transmitter must also be 6,7,8. If the interference continues, please re-set the code anddo the same procedure for both transmitter and receiver.<ref to diagram(3)>. DIAGRAM 3 Mounting on the wall X Please remove the back of the case by pushing in the tab on the bottom by screwdrivers. Mount the back of the case on the wall and snap the front case back on. In case of using double side tapes, please ensure the wall is dry and clean.<ref to diagram(4)> Warning: Changes or modifications not expressly approved by the party responsible for compliance would 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 encourage 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 needed. … Consult the dealer or an experienced radio/TV technician for help. Copyright ©Sure Win Technologies Ltd

Block Diagram FCC ID: S8AJWGKDL Model No.: DB-1132 PCB Integral Antenna Super-regenerative RF Detector 315 MHz Q1 315 MHz RF signal Demodulated signal (2KHz pulse) Signal Amplifier Q2, Q3, Q4 Decoder IC1: SD7296 62 KHz Volume Control and Power Amplifier Q5 Speaker Battery 3V Audio Output IC1: SD7296

External Photo FCC ID : S8AJWGKDL External Photo - front External Photo - rear

label This device complies with Pa rt 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. MODEL: DB-1132 FCC ID:S8AJWGKDL MADE IN CHINA SIZE ： L50MM*30MM

Internal Photo FCC ID : S8AJWGKDL Internal Photo - 1 Internal Photo - 2 Internal Photo FCC ID : S8AJWGKDL Internal Photo - 3

Technical Description FCC ID: S8AJWGKDL Model: DB-1132 DB-1132 is a wireless door chime operating at 315 MHz. The RF signal transmitted by the remote control is received by the PCB antenna. The 315 MHz RF signal is then detected by the super-regenerative receiver which consist of Q1 and it surrounding tuned circuit C1, C2, C3, C4, CV1 and L1. At the same time, the code information is demodulated from the RF signal by making use of the frequency response of the transistor Q1 (KSP10), which act like a envelope detector. The code impulse is coupled through C9 to the amplifier consist of Q2, Q3, Q4 and it surrounding tuned circuit for further amplification to ensure the sufficient sensitivity for the reception. The code impulse is verified and decoded by IC1 (SD7296). If the code is correct, ring tone will be generated. The ring tone generated will pass through the volume control circuit and the amplifier Q5 and to the speaker finally.

1234 A B C D 4321 D C B A Title NumberRevisionSize A4 Date:25-Aug-2007Sheet of File:D:\JianYi\xjh.ddbDrawn By: SP 0.25W 8Ω C13 104 BAT 3V C1 56P C3 4.7P C8 102 C2 3300P R3 7K5 R1 82K R6 3K3 R4 3K3 R2 68K R14 330K C4 3.9P L1 4.7uH CV1 2-5P R7 3K3 R11 150K R10 10M C9 104 C10 102 R8 10M R9 150K C11 330P C12 104 R12 3M3 R13 100K A0 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 VSS 9 MOD 10 NC 11 Test 12 Audio 13 S1 14 OSC1 15 OSC2 16 Test1 17 VDD 18 IC1 SD7296 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SW1 SW2 C7 104 R5 330Ω R15 1K 1.1 Q5 S8050D Q1 KSP10 Q2 S9014D Q3 S9014D Q4 S9014D VOL 20K C6 103 D1 IN4148 C14 470uF ANT-PCB 315MHz无线音乐门铃 315MHz无线音乐门铃接收机 DB1132R-315MHZ SURE WIN ELECTRONICS., LTD DB1132R-315MHz 熊建华 C15 13P test-1 test-3 test-2 62KHz OSC 62KHz 备注：Q2-Q3-Q4 备用三极管：2SC1623 315MHz 315MHz PDF created with pdfFactory Pro trial version www.pdffactory.com

- The evaluation data of the report will be kept for 3 years from the date of issuance. - 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 permit copying or distribution of this report and then only in its entirety. 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 in 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. Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576 Castle Peak Road, Kowloon, Hong Kong. Tel: (852) 2173 8888 Fax: (852) 2785 5487 Website: www.hk.intertek-etlsemko.com Sure Win Technologies Ltd. Application For Certification (FCC ID: S8AJWGKDL) Superregenerative Receiver 0716179 BH/ SL October 05, 2007 INTERTEK TESTING SERVICES FCC ID: S8AJWGKDL i LIST OF EXHIBITS INTRODUCTION EXHIBIT 1: General Description EXHIBIT 2: System Test Configuration EXHIBIT 3: Emission Results EXHIBIT 4: Equipment Photographs EXHIBIT 5: Product Labelling EXHIBIT 6: Technical Specifications EXHIBIT 7: Instruction Manual EXHIBIT 8: Miscellaneous Information INTERTEK TESTING SERVICES FCC ID: S8AJWGKDL ii MEASUREMENT/TECHNICAL REPORT Sure Win Technologies Ltd. - MODEL: DB-1132 FCC ID: S8AJWGKDL This report concerns (check one:) Original Grant X Class II Change _____ Equipment Type: Superregenerative Receiver (example: computer, printer, modem, etc.) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name 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 radiator - the new 47 CFR [05-04-07 Edition] provision. Report prepared by: Ho Wai Kin, Ben Intertek Testing Services Hong Kong Ltd. 2/F., Garment Centre, 576, Castle Peak Road, Kowloon, Hong Kong. Phone: 852-2173-8505 Fax: 852-2371-0521 INTERTEK TESTING SERVICES FCC ID: S8AJWGKDL iii Table of Contents 1.0 General Description ........................................................................................ 2 1.1 Product Description ........................................................................................... 2 1.2 Related Submittal(s) Grants............................................................................... 2 1.3 Test Methodology.............................................................................................. 3 1.4 Test Facility ....................................................................................................... 3 2.0 System Test Configuration ............................................................................. 5 2.1 Justification ....................................................................................................... 5 2.2 EUT Exercising Software................................................................................... 5 2.3 Special Accessories .......................................................................................... 5 2.4 Equipment Modification ..................................................................................... 6 2.5 Measurement Uncertainty.................................................................................. 6 2.6 Support Equipment List and Description ............................................................ 6 3.0 Emission Results ............................................................................................ 8 3.1 Field Strength Calculation.................................................................................. 9 3.2 Radiated Emission Configuration Photograph.................................................. 10 3.3 Radiated Emission Data .................................................................................. 11 4.0 Equipment Photographs ............................................................................... 14 5.0 Product Labelling.......................................................................................... 16 6.0 Technical Specifications ............................................................................... 18 7.0 Instruction Manual........................................................................................ 20 8.0 Miscellaneous Information........................................................................... 22 8.1 Stabilization Waveform.................................................................................... 23 8.2 Discussion of Pulse Desensitization................................................................. 24 8.3 Calculation of Average Factor.......................................................................... 25 8.4 Emissions Test Procedures ............................................................................. 26 INTERTEK TESTING SERVICES FCC ID: S8AJWGKDL iv List of attached file Exhibit type File Description filename Test Report Test Report report.pdf Operation Description Technical Description descri.pdf Test Setup Photo Radiated Emission radiated photos.doc External Photo External Photo external photos.doc Internal Photo Internal Photo internal photos.doc Block Diagram Block Diagram block.pdf Schematics Circuit Diagram circuit.pdf ID Label/Location Label Artwork and Location label.pdf User Manual User Manual manual.pdf Test Report Stabilization Waveform superreg.pdf INTERTEK…

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Test Setup FCC ID : S8AJWGKDL Radiated - front Radiated - rear