AWID's MR-1824 Proximity Card Reader is a high-power reader for mid-range proximity reading distance, in a small self-contained package. Read range with cards is up to 24 inches. (Read range varies, depending upon the tag used and local conditions.) The MR-1824 reader is used frequently in parking facilities, for driver identification and vehicle access.
Metal-Compensation This reader is available in an optional MR-1824MC version, which includes metal-compensation. It has best read range when it is mounted on a metal surface at least as large as the reader (8 x 8 inches). Mount the MR-1824 version at least 4 inches from all metal for best read range.
Installation The MR-1824 reader is fastened by 4 screws on any non-metal wall or other surface. The MR-1824MC reader starts by fastening the ferrite plates behind the reader's plastic base to the metal surface, and then fastening the reader's cover to its base. When installing the reader on a pedestal, either mount the MR-1824 on a 4-inch-thick plastic housing as a spacer from the metal, or mount the MR-1824MC on a metal-plate adapter between the reader and the flange on the pedestal.
Features These readers contain (a) a 3-color LED to indicate successful card read and access-granted, (b) a 4 kilohertz beeper for attention and alarm, and (c) a "hold" circuit to delay data transmission. Both LED and beeper are controlled by the reader itself. All three functions can be controlled externally by the host system.
Testing The reader is self-testing - using its own LED and beeper, it needs no interface to a controller to assure the installer and cardholder of correct performance. The reader is also self-diagnostic Maximum RFID - if DC power is unstable, or if electrical noise is induced in the cable, the reader resets and its LED changes to amber.
Operation AWID's proximity readers use a re-present mode that requires that the user remove the card from the reader's field before the card can be read again. This feature eliminates multiple reads from a single presentation of the card. The MR-1824 has both Wiegand data interface for basic 4-wire connection (7 wires when all features are controlled), and also RS-232 serial interface. Code transmission from both interfaces is simultaneous.
Environment The MR-1824 reader is ready for installation indoors and outdoors. The ABS plastic two-part enclosure, quickly installed when its cover is removed, provides a secure package when the cover is fastened to the base. Epoxy resin potting protects the electronic circuits.