NW5XC4XyLoc KeyCard - Electronic Key for PC

August 17, 2009 Certification and Engineering Bureau Industry Canada 3701 Carling Avenue, Bldg. 94 Ottawa, Ontario K2H 8S2 Re: Certification for Ensure Transmitter Model/PN(s): XC-4 FCC ID: NW5XC4 IC: 3937A-4 Please find enclosed application materials for certification of Ensure Transmitter. We tested the device and found it to comply with RSS-GEN/102/210. The product is identified by: IC: 3937A-4 If there are any questions, suggestions, etc., regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647- 2106; e-mail: [email protected]. Sincerely, Valdis V. Liepa Research Scientist August 17, 2009 Federal Communications Commission Equipment Approval Services P.O. Box 358315 Pittsburgh, PA 15251-5315 Re: Certification for Ensure Transmitter Model/PN(s): XC-4 FCC ID: NW5XC4 IC: 3937A-4 Please find enclosed application materials for certification of Ensure Transmitter. We tested it and found it to comply with FCC Part 15. If there are any questions regarding the application or testing performed, please contact me at the above address or call 734-483-4211, fax 734-647-2106, or e-mail [email protected]. Sincerely, Valdis V. Liepa Research Scientist

Re: Certification for Ensure Transmitter FCC ID: NW5XC4 IC: 3937A-4 REQUEST FOR CONFIDENTIALITY Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, Ensure requests that a part of the subject application be held confidential. Ensure has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Type of Confidentiality Requested Exhibit Short Term Permanent (1) ID Label & Location Short Term Permanent (3) External Photos Short Term Permanent 1 (4) Block Diagram Short Term Permanent (5) Schematics Short Term Permanent (7) Test Setup Photos Short Term Permanent (8) User’s Manual Short Term Permanent (9) Internal Photos Short Term Permanent (10) Parts List & Placement Short Term Permanent (11) RF Exposure Short Term Permanent (12) Description of Operation 1. Block Diagram includes internal oscillator frequency information that the manufacturer considers to be proprietary. Permanent Confidentiality: Ensure requests the exhibits listed above as permanently confidential be permanently withheld from public review. Short-Term Confidentiality (FCC Only): Ensure requests the exhibits selected above as short term confidential be withheld from public view for a period of 45 days from the date of the Grant of Equipment Authorization and prior to marketing. If there are any questions regarding this request, please contact me at the above address or call 734-483-4211, fax 734-647-2106 or e-mail [email protected]. Sincerely, Valdis V. Liepa, Research Scientist University of Michigan

Theory of Operation for Ensure Technologies Key XC-4 Series Please refer to the block diagram for this discussion. This device is a keyed FSK transmitter. The transmitted signal comes from an integrated circuit that contains the VCO, PLL, data modulator and transmit amplifier. A 26 MHz crystal provides the reference frequency which is multiplied up to obtain the operating frequency. A microprocessor provides control over operation of the RF transmitter. The ON button starts the micro and initiates transmission every second for approximately 13 hours. The OFF button suspends transmissions and puts the device into a sleep state. On alternate transmissions, the device changes it’s antenna pattern by selecting one of two internal antennas via an RF switch controlled by the microprocessor.

University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-518 Page 1 of 14 The University of Michigan Radiation Laboratory 3228 EECS Building Ann Arbor, MI 48109-2122 Tel: (734) 764-0500 Fax: (734) 647-2106 Measured Radio Frequency Emissions From Ensure Technologies, Inc. Transmitter FCC ID: NW5XC4 IC: 3937A-4 Test Report No. 417124-518 August 16, 2009 Copyright © 2009 For: Ensure Technologies, Inc. 135 South Prospect, Suite 100 Ypsilanti, MI 48198 Contact: Steve Spencer [email protected] Phone: 734 547 1627 Fax: 734 547 1601 Testing supervised by: Measurements made by: Valdis V. Liepa Report Approved by:__________________________ Valdis V. Liepa Test report written by: Joseph D. Brunett Research Scientist Summary Tests for compliance with FCC Regulations, CFR 47, Part 15 and with Industry Canada RSS-210/Gen, were performed on a Ensure, FCC ID: NW5XC4, IC: 3937A-4. This device under test (DUT) is subject to the rules and regulations as a Transmitter. In testing completed on August 15, 2008, the DUT tested met the allowed specifications for radiated emissions by 2.8 dB. Conducted emissions are not subject to regulation as the DUT is powered by a 3 VDC battery. University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-518 Page 2 of 14 Table of Contents 1. Introduction ...................................................................................................................................... 3 2. Equipment Used ............................................................................................................................... 3 3. Device Under Test ........................................................................................................................... 4 3.1 Description & Block Diagram .............................................................................................. 4 3.2 Variants ................................................................................................................................. 4 3.3 Modes of Operation .............................................................................................................. 4 3.4 Exemptions ........................................................................................................................... 4 3.5 EMC Relevant Modifications ............................................................................................... 4 4. Emissions Limits .............................................................................................................................. 5 4.1 Radiated Emissions Limits .................................................................................................... 5 5. Measurement Procedures ................................................................................................................. 6 5.1 Semi-Anechoic Chamber Radiated Emissions ...................................................................... 6 5.2 Outdoor Radiated Emissions ................................................................................................. 6 5.3 Radiated Field Computations ................................................................................................ 6 5.4 Indoor Power Line Conducted Emissions ............................................................................. 6 5.5 Supply Voltage Variation ...................................................................................................... 7 6. Test Results ...................................................................................................................................... 7 6.1 Radiated Emissions ............................................................................................................... 7 6.1.1 Peak to Quasi-peak and Average Ratio ............................................................................. 7 6.1.2 Emission Spectrum ........................................................................................................... 7 6.1.3 Emission Bandwidth ......................................................................................................... 7 6.1.4 Supply Voltage and Supply Voltage Variation ................................................................. 7 6.2 Conducted Emissions ............................................................................................................ 7 University of Michigan Radiation Laboratory FCC Part 15, IC RSS-210/Gen - Test Report No. 417124-518 Page 3 of 14 1. Introduction This Ensure Transmitter was tested for compliance with FCC Regulations, Part 15, adopted under Docket 87-389, April 18, 1989 as subsequently amended, and with Industry Canada RSS-210/Gen, Issue 7, June 2007. Tests were performed at the University of Michigan Radiation Laboratory Willow Run Test Range following the procedures described in ANSI C63.4-2003 "Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz". The Site description and attenuation characteristics of the Open Site facility are on file with FCC Laboratory, Columbia, Maryland (FCC Reg. No: 91050) and with Industry Canada, Ottawa, ON (File Ref. No: IC 2057A-1). 2. Equipment Used The pertinent test equipment commonly used in our facility for measurements is listed in Table 2.1 below. The middle column identifies the specific equipment used in these tests. The quality system employed at the University of Michigan Radiation Laboratory Willow Run Test Range has been established to ensure all equipment has a clearly identifiable classification, calibration expiry date, and that all calibrations are traceable to national standards. Table 2.1 Test Equipment. Test Instrument Used Manufacturer/Model Q Number Spectrum Analyzer (9kHz-26GHz) X Hewlett-Packard 8593E, SN: 3412A01131 HP8593E1 Spectrum Analyzer (9kHz-6.5GHz) X Hewlett-Packard 8595E,…

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