MSR-441 Credit Card
Access Control System
User Handbook
GENERAL DESCRIPTION
The MSR-441 is a low cost stand-alone
programmable access control system incor-
porating a magnetic card reader. This reader
will read magnetic cards programmed on
track 2 as specified by ISO 3554, such as
credit cards and EC cards.
The card read head, electronics, memory
and relay circuitry are contained in a robust
housing for simple installation. The
minimum connection just requires 12V AC or
DC and a door strike.
When the reader is powered up, all credit
cards that are swiped will be accepted for 24
hours a day. A Function Card supplied with
the reader allows the setting up of the strike
relay time. The function card is unique to each system thus preventing another
customer with the same product from tampering on different sites.
THE SYSTEM FUNCTION CARD
The FUNCTION CARD is required to set up a "site" consisting of one or several
MSR-441 readers. The Function Card is marked and used as follows:
TIME ADJUST CARD
Swiping this card causes the Yellow POWER lamp to start flashing. Each flash adds
0.25s to the relay operating time. When the required number of flashes have passed,
swipe the Time Adjust card again to terminate the function.
The new relay operating time will be stored permanently in memory. The time can be
changed at any time and may be set from 0.25s to 12s.
In addition an optional door monitoring switch may be connected to the system to reset
the relay circuit when the door is opened, irrespective of the strike time setting.
MSR441 User Handbook rev2.lwp Page 1 of 3
