全新 原装 现货 热卖 DS1991L+F50

SPECIAL FEATURESß 1,152-bit secure read/write, nonvolatilememoryß Secure memory cannot be decipheredwithout matching 64-bit passwordß Memory is partitioned into 3 blocks of 384bits eachß 64-bit password and ID fields for eachmemory blockß 512-bit scratchpad ensures data transferintegrityß Operating temperature range: -40°C to+70°Cß Over 10 years of data retentionCOMMON iButton FEATURESß Unique, factory-lasered and tested 64-bitregistration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assuresabsolute traceability because no two parts arealikeß Multidrop controller for MicroLANß Digital identification and information bymomentary contactß Chip-based data carrier compactly storesinformationß Data can be accessed while affixed to objectß Economically communicates to bus masterwith a single digital signal at 16.3k bits persecondß Standard 16 mm diameter and 1-Wireprotocol ensure compatibility with iButtonfamilyß Button shape is self-aligning with cupshapedprobesß Durable stainless steel case engraved withregistration number withstands harshenvironmentsß Easily affixed with self-stick adhesivebacking, latched by its flange, or locked witha ring pressed onto its rimß Presence detector acknowledges when readerfirst applies voltageß Meets UL#913 (4th Edit.); Intrinsically SafeApparatus, Approved under Entity Conceptfor use in Class I, Division 1, Group A, B, Cand D Locations

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