MRXSSW4TPMS

Federal Communications Commission Applications Processing Branch 7435 Oakland Mills Road Colombia, MD 21046 American Certification Body, Inc. 6731 Whittier Avenue Suite C110 McLean, VA 22101 To Whom It May Concern: Joseph D. Brunett on behalf of Willow Run Test Labs, LLC is authorized to act on our behalf, until otherwise notified, for applications to American Certification Body, Inc. (ACB). We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Expiration Date: February 27, 2015 Dated this 27 th day of February, 2013. By: JAMES KYLE_______________ (Signature) (Print name) Title: RF APPROVALS COORDINATOR email: [email protected] On behalf of: SCHRADER ELECTRONICS LD (Company Name) Telephone: 02894483067 Fax: N/A

Willow Run Test Labs, LLC 8501 Beck Road, Building 2227 Belleville, MI 48111 Phone: (734) 252-9785, Fax (734) 926-9785 e-mail:[email protected] REQUEST FOR CONFIDENTIALITY Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, Schrader requests that a part of the subject application be held confidential. Schrader 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 RequestedExhibit Permanent Confidentiality:Schrader requests the exhibits listed above as permanently confidential be permanently withheld from public review. Short-Term Confidentiality (FCC Only):Schrader 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- 252-9785, fax 734-926-9785 or e-mail [email protected] Sincerely, Joseph D. Brunett, Ph.D. Willow Run Test Labs, LLC Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box Check Box 1.Block Diagram includes internal oscillator frequency information that the manufacturer considers to be proprietary. 2.DUT is FULLY potted using a non-removable epoxy based material. Removal of potting material causes irreparable damage to internal circuitry. Photograph exhibits outline the half-clam-shell device before and after potting. 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 2 (9)Internal Photos Short Term Permanent(10)Parts List & Placement Short Term Permanent(11)RF Exposure Short Term Permanent(12)Description of Operation Re:Certification for Schrader Electronics TPMS FCC ID: MRXSSW4 IC: 2546A-SSW4

SCHRADER ELECTRONICS.LTD.. SYMC EDISON WAL 433 MHZ Product Specification. The TPMS Transmitter is installed to the valve stem in each tyre of a vehicle. The unit measures tyre pressure periodically and transmits this information by RF communication to a receiver inside the vehicle. In addition, the TPMS Transmitter performs the following functions: Determines a temperature compensated pressure value. Determines any abnormal pressure variations in the wheel. Monitors the state of the Transmitters’ internal battery and informs the receiver of a low battery condition.

Explanation XXOff modeSensor shall not transmit periodically while in Off mode. XLearn mode XXSensor shall not transmit periodically while in Stationary mode. X xX xXDrive mode xAlarmalarm conditions apply for significant changes in pressure Emergency Modes Consumer Use Modes Manufacturing & Service Mode Mode of Operation Sensor shall transmit 36 frames in a continuous burst upon entry to Learn mode. Upon completion of the Learn mode, the sensor will enter Stationary mode. Sensor shall enter Learn mode following (1) a Learn mode LF activation command, or (2) if two consecutive pressure samples in Off mode are greater than 0.225 bar (3.26 psi) from each other then the transmitter will enter Learn mode with 36 frames RF transmissions. The status of Factory mode will be enabled with factory counter defaulted to 20 drives. Stationary mode Factory WAL mode During the first 3 minutes in Factory WAL mode, the rate of transmissions is increased to 10 secs. The TPM sensor will transmit one block of data, 6 frames. There are 18 WAL cycle transmissions during this initial 3 minutes. After the initial 3 minutes, there will be a further 12 WAL cycle transmissions, each will transmit every 30 seconds. The total duration of Factory WAL mode will be for 30 cycles (9 minutes). Factory mode is disabled and cannot be entered into after 20 journeys. After 20 journeys, Normal WAL mode is enabled. Normal WAL mode The TPM sensor will transmit one block of data, 6 frames, every 30 secs. There are 18 WAL cycle transmissions (9 minutes) during Normal WAL mode before entering Drive mode. When WAL Mode expires the transmitter enters Drive Mode. In Drive Mode the TPM sensor will transmit one block of data, 3 frames, every 30 secs.

Date of Issue: August 19, 2013Prepared For: Schrader ElectronicsTest Report No.: 20130819-01 Willow Run Test Labs, LLC 8501 Beck Road, Building 2227 Belleville, Michigan 48111 USA Tel: (734) 252-9785 Fax: (734) 926-9785 e-mail: [email protected] Testing of Electromagnetic Emissions per USA: CFR Title 47, Part 15.231(e) Canada: IC RSS-210/GENe are herein reported for Schrader Electronics SSW4 Test Report No.: 20130819-01 Copyright c ©2013 Applicant/Provider: Schrader Electronics 11 Technology Park, Belfast Road, Antrim Northern Ireland BT41 1QS United Kingdom Phone: +44 28 9448 3067, Fax: +44 28 9446 8440 Contact Person: James Kyle; [email protected] Measured by: Report Approved by: Dr. Joseph Brunett, EMC-002790-NEDr. Joseph Brunett, EMC-002790-NE Report by: Report Date of Issue:August 19, 2013 Dr. Joseph Brunett, EMC-002790-NE Results of testing completed on (or before) August 19, 2013 are as follows. Emissions:The transmitter fundamental emission meets the regulatory limit(s) by no less than 6.6 dB. Transmit chain spurious harmonic emissions comply by no less than 16.1 dB. Willow Run Test Labs, LLC, 8501 Beck Road, Building 2227, Belleville, Michigan 48111 USAPage 1 of 14 Date of Issue: August 19, 2013Prepared For: Schrader ElectronicsTest Report No.: 20130819-01 Contents 1 Test Specifications, General Procedures, and Location3 1.1 Test Specification and General Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1.2 Test Location and Equipment Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2 Configuration and Identification of the Equipment Under Test5 2.1 Description and Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1.1EUT Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1.2Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2.1.3Variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.1.4Test Samples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.1.5Functional Exerciser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.1.6Modifications Made . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.1.7Production Intent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.1.8Declared Exemptions and Additional Product Notes . . . . . . . . . . . . . . . . . . . . . . . .6 3 Emissions7 3.1 General Test Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.1.1Radiated Test Setup and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 3.1.2Conducted Emissions Test Setup and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.1.3Power Supply Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.1.4Thermal Variation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.2 Intentional Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2.1Fundamental Emission Pulsed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2.2Fundamental Emission Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.2.3Fundamental Emission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.3 Unintentional Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.3.1Transmit Chain Spurious Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 List of Tables 1Willow Run Test Labs, LLC Equipment List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2EUT Declarations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3Pulsed Emission Characteristics (Duty Cycle). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4Intentional Emission Bandwidth.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5Fundamental Radiated Emissions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6Transmit Chain Spurious Emissions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 List of Figures 1Photos of EUT.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2EUT Test Configuration Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3Radiated Emissions Diagram of the EUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 4Radiated Emissions Test Setup Photograph(s). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 5Pulsed Emission Characteristics (Duty Cycle). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5Pulsed Emission Characteristics (Duty Cycle). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6Intentional Emission Bandwidth.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Willow Run Test Labs, LLC, 8501 Beck Road, Building 2227, Belleville, Michigan 48111 USAPage 2 of 14 Date of Issue: August 19, 2013Prepared For: Schrader ElectronicsTest Report No.: 20130819-01 1 Test Specifications, General Procedures, and Location 1.1 Test Specification and General Procedures The ultimate goal of Schrader Electronics is to demonstrate that the Equipment Under Test (EUT) complies with the Rules and/or Directives below. Detailed in this report are the results of testing the Schrader Electronics SSW4 for compliance to: Country/RegionRules or DirectiveReferenced Section(s) United StatesCode of Federal RegulationsCFR Title 47, Part…

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