G4S Technology S821 User Manual

Installation and User Instructions for S821 Readers

The S821 is a contactless smart-card reader, which uses

20mA current loop seudo-random communications

S821 is able to read Texas Instruments (ISO 15693) and

®®

Philips MIFARE smart cards.

For either type of card, the S821 supports the use of
unencoded cards (where only the unique card serial
number is read). In the case of Texas Instruments (TI)
cards, an encoded card number can be read. Encoding
formats supported include TI's own formats and the
"smartMAX TI" format.

The reader can simultaneously support two different card
types/formats (e.g. "smartMAX TI" and MIFARE). The
reader is automatically configured to accept the first two
card types/formats presented.

p . The

TM

1

Mount the Backplate

The backplate has suitable holes for connection to most standard electrical backboxes.

To mount the backplate:

1) Detach the main body of the reader from the
backplate by releasing the two securing screws
along the bottom edge of the reader.

2) Mount the backplate adjacent to the opening edge
of the door and at a convenient height. Feed the
cable to the reader through the backplate.

2

Reader Connections

20mA Current Loop Reader Connections

Red

Black

Green

Orange

White

Blue

Note: the brown
wire is not used

Reader

Controller connections
(20mA reader port)

Connect shield at
controller end only
(connect to case)

3

Reader Configuration

12V

0V

Rx+

Rx-

Tx+

Tx-

The reader supports the first two different card types/formats presented after power-up. For
example, unencoded MIFARE and encoded TI cards (in this example, unencoded TI cards would
not be recognized). The reader enters this configuration mode whenever power is re-applied.

4

Using the Reader

Present the card face-on to the reader until you hear a "bleep". If the green indicator is lit, the card
has been accepted and the door is unlocked. If the red indicator is lit, either the card has not been
accepted, or you do not have access through the door. If the read and green indicators flash
alternatively, please wait.

cards can be presented in rapid succession - there is no need to wait for the green or red

Note:

LED to extinguish before presenting another card.

9600-0304. Installation and User Instructions for S821

Readers, Issue 1.0x8 8th October 2003. AMAG Technology,

2003.
FCC Notice: This device complies with Part 15 of the FCC

Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.

Any unauthorized modification to this device may void the
authority of the user to operate it.

All trademarks acknowledged. Texas Instruments is a
trademark of Texas Instruments Incorporated. Philips and
MIFARE are registered trademarks of Philips Electronics, NV.

©

Specifications

Input voltage: 9-14V.
Input current: 110mA @ nominal 12Vdc supply.
Operating temperature: -13 to 158 F (-25 to 70 C).

°°

Operating humidity: 15 to 90%, non-condensing.
Maximum read range: 3" (80mm).
Approvals: EN50133, R&TTE, IP656.