Title: Hardware Installation Guide.pdf
The following tables list the differences between series 1 and series 2 hardware.Single Reader Interface ModuleFeatureSeries 1Series 2Serial numberless than 650,000650,000 or greater (revision D)Input power12 VDC ±10%12 to 24 VDC ±10%Firmware updatesReplace chipDownload firmware into flash memory in the field supportedRS-485 reader interfaceNot supportedSupportedCommand keypadNot supportedSupported, currently defaults to RS-485, address 0, 9600 baudrevision 6 — 32762InstallationTo install the SRI, perform the installation procedures described in the following sections, in the order in which they are presented.1. Wire the supervised alarm inputs for door position and REX exit push button monitoring.2. Wire the upstream host communication.3. Wire the relay outputs.4. Wire the downstream interface for the keypad or card reader (for older models of the SRI, a TTL interface is used).