SUPREX® Reader Expansion Module for SPX and HHRSUPREX Reader Expansion Module for SPX and HHR products (not compatible with SPX 1300). RS 485 Interface. Includes Central and Remote units. Supports reader and 2 relays with LED, door hardware and associated I O. Requires 8 16 VDC. Durable aluminum housing. Overall dimensions of each unit: 4. 50 x 2. 90 x 1. 00 (approx). Firmware version 400 and newer are not compatible with SPX units made before May 2016 (Serial Number 126055 or lower). EXP 2000
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