F5305WS4965Wireless Home Security Interface

April 25, 2005 Federal Communications Commission 7435 Oakland Mills Road1241 Clyde Ave Columbia , Maryland 21046 Applicant : Digital Security Controls Product: Wireless Door/Window Contact Model: WS4965 FCC ID : F5305WS4965 Please accept this letter as official authorization for the multiple listing of the Secure Wireless model EV- DW433C under the Digital Security Controls Model WS4965. Please contact me should you require any additional information or clarification. Regards, Dan Nita DSC Approval Services

Helen Zhao Subject: FW: Digital Security Controls, FCC ID: F5305WS4965, Assessment NO.: AN05T4794, Notice#1 Importance: High 5/23/2005 -----Original Message----- From: joy Sent: Sunday, May 22, 2005 9:05 PM To: Helen Zhao Subject: FW: Digital Security Controls, FCC ID: F5305WS4965, Assessment NO.: AN05T4794, Notice#1 Importance: High Dear Helen: Question #1: This device is activated automatically, please provide plots to show the device will cease transmission within 5 seconds after deactivation in three cases: tilt switch, tamper switch and reed switch, to demonstrate compliance with FCC rule 15.231(a)(2). Alternatively, You can ask the manufacturer to provide mechanism behind the design to show theoretical pulse train plot in Operational Description. For your information, the operational description contains old and incorrect information: "The sensor is operated by the triggered momentarily within 0.2 second and will automatically deactivate send signal to receiver. This feature is incorporated by the U1 internally." Unfortunately, there is no U1 on the schematics. ---> Attached please find DSC communication for FCC. If you have any further comments,please feel free contact me. Best regards, Joy Hsiao

Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page PHOTOGRAPHS OF EUT Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page

FCC ID LABEL FORMAT AND LOCATION Digital Security Controls FCC ID: F5305WS4965 FCC ID: F5305WS4965 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. FCC ID LABEL AREA

Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page Compliance Certification Services Inc. Refer No.: 50201204 Report No.: 50503209 Date of Issue: May 10, 2005 Page

WS4965 door sensor Operational Description The WS4965 door sensor is a low powered, which is installed in house to detect door/window for home security and other features. See the function descriptions in attached. The sensor is powered by a 3.3 volt battery. It is designed to operate on a single fixed frequency at 433.92 MHz. See the attached block diagram and schematic. There are 3 switches trigger the integrated circuit (IC1) which produces the digital control signals and will modulate the carrier signal(ASK). The carrier signal is generated by a I.C (IC1) oscillator/amplifier circuit comprised of a 13.56 MHz crystal (X1) . The modulated output of the RF stage is coupled to the strip antenna. The antenna is off-board soldered, around 160mm. The sensor is operated by the triggered momentarily within 0.2 second and will automatically deactivate send signal to receiver. This feature is incorporated by the U1 internally. All tuning and verification are performed by the manufacture and there are no adjustments can be made by user.

DSC Communication Bit '0' Bit '1' 2k baud = 500us Transmission Format: A complete transmission consists of a header, 4 sync bits, status byte, 24bit serial number, and 8 bit CRC. Status Byte Serial MSB Serial Mid Serial LSB CRC Byte Header 2.5ms PREAMBLE 4 '1' BITS Start Bit MSBLSB T1T2T3 T1 = 100ms + (50ms * Serial Number LSB bit 1,0) T2 = 100ms + (50ms * Serial Number LSB bit 3,2) T3 = 100ms + (50ms * Serial Number LSB bit 5,4) Example: If Serial Number LSB is 00110010. Then T1 = 200ms, T2 = 100ms, and T3 = 250ms. A complete transmission consists of 4 packets of data. The timing between packets is defined as follows:

Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 1 of 15 Rev. 00 FCC ELECTROMAGNETIC EMISSIONS COMPLIANCE REPORT CERTIFICATION TO FCC PART 15 REQUIREMENTS for INTENTIONAL RADIATOR of Wireless home security interfac FCC ID Number : F5305WS4965 Trade Name : DSC Model Number : WS4965 Agency Series : N/A Report Number : 50503209-RP1 Date : May 10, 2005 Issued to Digital Security Controls 3301Langstaff Road Concord. Ontario Canada L4K 4L2 Issued by Compliance Certification Services Inc. Hsintien Lab. No. 165, Chunghsen Road, Hsintien City Taipei Hsien, Taiwan TEL: (02) 2217-0894 FAX: (02) 2217-1029 Note: This report shall not be reproduced except in full, without the written approval of Compliance Certification Services Inc. Ltd. This document may be altered or revised by Compliance Certification Services Inc. personnel only, and shall be noted in the revision section of the document. Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 2 Rev. 00 TABLE OF CONTENTS 1. VERIFICATION OF COMPLIANCE......................................................3 2. PRODUCT DESCRIPTION.....................................................................4 3. TEST FACILITY.......................................................................................4 4. MEASUREMENT STANDARDS.............................................................4 5. TEST METHODLOGY............................................................................4 6. MEASUREMENT EQUIPMENT USED.................................................5 7. POWERLINE RFI LIMIT........................................................................5 8. RADIATED EMISSION LIMITS.............................................................6 9. SYSTEM TEST CONFIGURATION.......................................................6 10. TEST PROCEDURE................................................................................7 11. EQUIPMENT MODIFICATIONS...........................................................8 12. TEST RESULT..........................................................................................9 12.1. MAXIMUM MODULATION PERCENTAGE (M%)..........................9 12.2. THE EMISSIONS BANDWIDTH.........................................................9 APPENDIX I TEST DATA............................................................................10 Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 3 Rev. 00 1. VERIFICATION OF COMPLIANCE COMPANY NAME : Digital Security Controls 3301Langstaff Road Concord. Ontario Canada L4K 4L2 CONTACT PERSON : Dan Nita TELEPHONE NO. : 905-760-3000 EUT DESCRIPTION : Wireless home security interfac MODEL NAME/NUMBER : WS4965 FCC ID : F5305WS4965 DATE TESTED : February 14, 2005 & February 17, 2005 REPORT NUMBER : 50503209-RP1 TYPE OF EQUIPMENT SECURITY EQUIPMENT (INTENTIONAL RADIATOR) EQUIPMENT TYPE 433.92 MHz Wireless home security interfac MEASUREMENT PROCEDURE ANSI 63.4 / 2003 LIMIT TYPE CERTIFICATION FCC RULE CFR 47, PART 15 The above equipment was tested by Compliance Certification Services Inc. for compliance with the requirements set forth in the FCC CFR 47, PART 15. The results of testing in this report apply to the product/system which was tested only. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. Warning: This document reports conditions under which testing was conducted and results of tests performed. This document may not be altered or revised in any way unless done so by Compliance Certification Services Inc. and all revisions are duly noted in the revisions section. Any alteration of this document not carried out by Compliance Certification Services Inc. will constitute fraud and shall nullify the document. Approved by: Reviewed by: Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 4 Rev. 00 2. PRODUCT DESCRIPTION Fundamental Frequency 433.92 MHz Power Source 3.3V Battery Transmitting Time Periodic < 5 seconds Associated Receiver FCC ID: N/A 3. TEST FACILITY The open area test sites and conducted measurement facilities used to collect the radiated data are located at No. 165 & 199, Chunghsen Road, Hsintien City, Taipei Hsien, Taiwan The sites are constructed in conformance with the requirements of ANSI C63.7, ANSI C63.4 and CISPR Publication 22. 4. MEASUREMENT STANDARDS The site is constructed and calibrated in conformance with the requirements of ANSI C63.4/2003. 5. TEST METHODOLOGY For an intentional radiator, the spectrum shall be investigated from the lowest radio frequency signal generated in the device, without going below 9 KHz, up to at least the tenth harmonic of the highest fundamental frequency or to 40 GHz, whichever is lower. (CFR 47 Section 15.33) Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 5 Rev. 00 6. MEASUREMENT EQUIPMENT USED Open Area Test Site # J Name of Equipment Manufacturer Model Serial Number Calibration Due SITE NSA CCS J Site N/A 09/18/2005 MEASURE RECEIVER SCHAFFNER SCR3501 330 06/27/2005 SPECTRUM ANALYZER ADVANTEST R3132 120900003 No Calibration Required ANTENNA SCHAFFNER CBL 6112B 2800 09/25/2005 PRE- AMPLIFIER SCHAFFNER CPA9231A 3629 10/08/2005 CABLE BELDEN 9913 N-TYPE #J1 10/08/2005 ATTENUATOR MCL UNAT-6 AT06-8 12/03/2005 THERMO- HYGRO METER TFA N/A NO.3 11/09/2005 EMC ANALYZER (100Hz-22GHz) HP 8566B 2937A06102 07/26/2005 ANTENNA (1-18GHz) EMCO 3115 5761 01/17/2006 AMPLIFIER (1-26.5GHz) HP 8449B 3008A01266 02/15/2005 CABLE (1-18GHz) JYEBAO HUBER+SUHNER LL142 SUCOFLEX 104 SMA-RS1&2 SMA-RS3 02/15/2005 Remark: Each piece of equipmen…

Text truncated - open the document above for the full version.

Compliance Certification Services Inc. Refer No.: 50201204-RP1 Report No.: 50503209-RP1 FCC ID: F5305WS4965 Date of Issue: May 10, 2005 Page 6 Rev. 00 8. RADIATED EMISSION LIMITS GENERAL REQUIREMENTS SECTION 15.209 RESTRICTED BANDS OF OPERATION SECTION 15.205 PERIODIC OPERATION IN THE BAND 40.66 -40.70 MHz AND ABOVE 70 MHz. SECTION 15.231 9. SYSTEM TEST CONFIGURATION Use a block of foam and combined it with EUT wrapping rubber band around it. This way it can test X, Y and Z axis. Radiated Open Site Test Set-up