Functional description of PRxx1 series controllers Rev.H.doc
2016-10-28
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1.1 Introduction
This document applies to PRxx1 series standard controllers and includes devices with built-in reader
for installation near the door (PR311-SE, PR621, PR612) as well as device without built-in reader for
installation inside metal box preferably in some distance from door (PR411DR). PR621-CH and
PR821-CH controllers are equipped with card holder and functionally are similar to PR621 controller.
Therefore in the present document, the name PR621 can also apply to both PR621-CH and PR821-
CH. The only difference between PR311-SE-BK and PR311-SE is lack of keypad in the first one. The
controller PR411DR is available both in plastic enclosure for installation on DIN 35mm rail
(PR411DR) or as electronic module (PR411DR-BRD). The name PR411DR applies to all possible
models of this controller.
This document does not apply to older type controllers of following types: PR401, PR301 and
PR201.
1.2 Design and Architecture
The PRxx1 series controllers are single-door, two–way access controllers. Each PRxx1 controller can
work with two logical access points (readers) called respectively: Terminal ID0 and Terminal ID1.
All PRxx1 series controllers except for PR411DR are equipped with built-in reader of EM125kHz
standard, which is logically treated as Terminal ID1 and they can operate with one external reader
logically treated as Terminal ID0. The PR411DR controller is not equipped with any built-in reader
but it can work with two external readers. Generally, the PRxx1 controllers are designed to operate
with PRT series readers (from Roger) configured to RACS Clock&Data data protocol, however
PR411DR can also work with Wiegand 26-66bit readers as well.
Fig. 1 General architecture of controller and reader(s)
