EZSDEI474SSidewinder Transmitter

Rev.No 1.0 ATTESTATION STATEMENT GENERAL REMARKS: 1. These transmitters are single frequency devices. They’re SAW resonator based and the transmission frequency is determined by the SAW resonator. The resonator used in the 473S/474S has a center frequency of 433.92 MHz +/- 75 KHz. This means the single transmission frequency will always be locked at 433.92MHz only with a +/-75 KHz tolerance for its center. Furthermore, the receivers operated by these transmitters are single band receivers tuned to 433.92MHz and only capable of receiving this frequency. 2. The 473S/474S are data transmission devices. Their protocol consists of 12 preamble bits (400us each) and 66 data bits (400us or 800us each, they are random) for a total of 78 bits. So the calculation for the duty cycle becomes: (12 x 400us)+(66x800us)= 57.60ms within a 100ms period The worst case scenario calculation is assured by the fact that we used 800us for all 66 data bits as they can be either 400us or 800us. SUMMARY: All tests were performed per CFR 47, Part(s) 15.231(a), 15.231(b), 15.231(c) n - Performed The Equipment Under Test n - Fulfills the requirements of CFR 47, Part(s) 15.231(a), 15.231(b), 15.231(c) - TÜV AMERICA, INC. - Responsible Engineer: Responsible Engineer: Jim Owen Alan Laudani (EMC Chief Engineer) (EMC Engineer)

1234 A B C D 4321 D C B A 474S/ 473S A Title: Size:Number:Revision: Date Code: File: Sheet of Drwn By X:\FCC\474S\Docs for TUV\474S block.ddb - Documents\474S block.Sch 11 A Directed Electronics Inc. One Viper Way Vista, CA 92083 Phone: 760-598-6200 Fax: 760-598-6400 DTBJ Appd By Chkd By Date Date Date 433.92 MHz Green LED BAT+(Clip) BAT- (PCB) 3V Battery T1 SW2 PCB SW1 PCB SW3 PCB SW4 PCB T3 EncoderRF OscillatorPCB Antenna Minas Minassian 01/15/2003

TÜV America Inc. Phone: (858) 546-3999 Product Service Fax: (858) 546-0364 10040 Mesa Rim Road E-mail: [email protected] San Diego, CA 92121 www.TUVamerica.com Management Service • Product Service • Industry Service • Automotive • BABT TÜV America Inc. is a subsidiary of Group TÜV Süddeutschland. 04 February 2003 Ms. Jaunice Green FCC 7435 Oakland Mills Road Columbia, MD 21046 [email protected] FCC Application Processing Branch Re: FCC ID EZSSDEI474S Applicant: Directed Electronics Inc Correspondence Reference Number: 24779 731 Confirmation Number: EA924155 Greetings: Please correct the 731 Form FCC ID to read FZSDEI474S. The number was incorrectly entered upon filing. The label is correct. Sincerely, Judy Evans Project Manager TUV America, Inc. [email protected]

TÜV America Inc. Phone: (858) 546-3999 Product Service Fax: (858) 546-0364 10040 Mesa Rim Road E-mail: [email protected] San Diego, CA 92121 www.TUVamerica.com Management Service • Product Service • Industry Service • Automotive • BABT TÜV America Inc. is a subsidiary of Group TÜV Süddeutschland. 04 February 2003 Ms. Jaunice Green FCC 7435 Oakland Mills Road Columbia, MD 21046 [email protected] FCC Application Processing Branch Re: INCORRECT FCC ID EZSSDEI474S Applicant: Directed Electronics Inc Correspondence Reference Number: 24779 731 Confirmation Number: EA924155 Greetings: Please correct the 731 Form FCC ID to read EZSDEI474S. The number was incorrectly entered upon filing. The label is correct. Sincerely, Judy Evans Project Manager TUV America, Inc. [email protected]

OPTIONAL 3 BUTTON CONFIGURATION PCB IS USED FOR EITHER 3 OR 4 BUTTON CONFIGURATION. OPTIONAL 4 BUTTON CONFIGURATION PCB IS USED FOR EITHER 3 OR 4 BUTTON CONFIGURATION. TOP AND BOTTOM OF 3 BUTTON RUBBER KEYPAD TOP AND BOTTOM OF 4 BUTTON RUBBER KEYPAD TOP OF 3 AND 4 BUTTON ASSEMBLED CASE BOTTOM OF 3 AND 4 BUTTON ASSEMBLED CASE