Justification Letter

FCC ID: LH8RP-S435

Cover Letter(s)

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FCCID_928847

CARDIN ELETTRONICA S.p.A. Via Raffaello 36, San Vendemiano - 31020 (TV) Tel. 0438/401818 Fax 0438/401831 RADIO CONTROL S435 RADIOPROGRAMMER JUSTIFICATION LETTER Date: 08.04.2008 Cardin Elettronica S.p.A. - R&D Department 1/3

DIFFERENCES The power section (transformer, voltage regulator, relays) is the same of the old version; only the fuse type is different, but has same value. The RF section is the same: we always use a RF module soldered on the base PCB (ref. “Y1”, on the right in the following photo). The difference is so mainly in the digital section, that uses a different microcontroller and a different ceramic resonator (the frequency now is 4MHz, in the old version was 10MHz). The selection of the working time is done digitally, programming this value by pushing a pushbutton; on the old version there was a resistive trimmer to set this time. The only “macro” difference is on the programming procedure, the other functions are always the same. Cardin Elettronica S.p.A. - R&D Department 2/3

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Document Created: 2008-04-08 17:53:13
Document Modified: 2008-04-08 17:53:13
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