MRXGMT051MANRemote Tire Pressure Sensor

Re: Certification for Schrader 25763677 Transmitter Model: 25763677 FCC ID: MRXGMT051MAN IC: 2546A- GMT051MA USER'S MANUAL INFORMATION (PRELIMINARY) The User's Manual is in preparation. The following material will be contained in the manual: FCC ID: MRXGMT051MAN IC: 2546A- GMT051MA This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. 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. WARNING: Changes or modifications not expressively approved by the party responsible for compliance could void the user's authority to operate the equipment. The term “IC:” before the radio certification number only signifies that Industry Canada technical specifications were met.

ANTENNA Valve Stem Roll Switch RF CIRCUIT 315 MHz OSC ASIC 32.7 kHz CK 3V LITHIUM BATTERY PRESSURE SENSOR ‘Learn’ Transponder LF

Re: Certification for Schrader 25763677 Transmitter Model: 25763677 FCC ID: MRXGMT051MAN IC: 2546A -GMT051MA REQUEST FOR CONFIDENTIALITY Pursuant to 47 CRF 0.459, Schrader requests that a part of the subject application be held confidential. This comprises Exhibits (5) Schematics (10) Parts List (Part of Exhibit only) (12) Description of Operation (Partial) 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. 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 Re: Certification for Schrader 25763677 Transmitter Model: 25763677 FCC ID: MRXGMT051MAN IC: 2546A- GMT051MA POWER OF ATTORNEY A letter granting Valdis V. Liepa the Power of Attorney is on file and can be provided when so requested. January 20, 2003 Re: Certification for Schrader 25763677 Transmitter Model: 25763677 FCC ID: MRXGMT051MAN IC: 2546A- GMT051MA STATEMENT OF MODIFICATIONS There were no modifications made to the DUT by this test laboratory. (Also see Section 3.1 of the attached Test Report). _____________________ Valdis V. Liepa Research Scientist Re: Certification for Schrader 25763677 Transmitter Model: 25763677 FCC ID: MRXGMT051MAN IC: 2546A- GMT051MA GENERAL PRODUCT INFORMATION The device, for which certification is pursued, has been designed by: Schrader Electronics Limited 11 Technology Park, Belfast Road Antrim BT41 1QS, Northern Ireland Ivan Bailie Tel: 011-44-(0)28 9448 2070 Fax: 011-44-1849-46-8440 It will be manufactured by: Schrader Electronics Limited 11 Technology Park, Belfast Road Antrim BT41 1QS, Northern Ireland Ivan Bailie Tel: 011-44-(0)28 9448 2070 Fax: 011-44-1849-46-8440 Canadian Contact: Gates Rubber Company, 3303 St. Etienne Boulevard, Windsor, Ontario. N8W 5B1 Canada Rick Gatti - 313 962 1711

RE: Schrader Electronics Limited FCC ID: MRXGMT051MAN The following is in response to the comments made on the above application. 1) The internal photographs are too dark. Please provide clearer internal photographs. Updated photographs have been uploaded. 2) The FCC on the label states MRXGMT051MAN, while the 731 form and test report states MRXGMT102MAN. Which FCC ID is correct? Please provide corrected exhibits as necessary. The ID number is MRXGMT051MAN, other exhibits have been fixed and uploaded. 3) The operational description provided by Schrader is labeled as confidential and was also uploaded as confidential. Please update the attestations exhibit to include "Operational Description" in the confidentiality letter request. A updated confidentiality letter has been uploaded. 4) Please comment on the 125 kHz transponder. Is the transponder in this device considered passive (i.e. energy for Transmission is generated only by energy received)? Additionally what is the return frequency of the transponder? See updated test report. 5) The summary of worse case results in section 5.3 of the test report do not appear to match the data. Please explain. See updated test report. 6) Section 6.1 mentions a 1.075 and a 1.085 ms lead in pulse. The calculations show 2 x 1.085. Please correct section 6.1 to show which is correct. See updated test report.