DM-21 Mercury Intrusion Display Catalog Page

Code No. LIT-1900836
Issued April 4, 2014
DM-21 Mercury Intrusion Display
Description
Johnson Controls, Inc. now offers Mercury Security Corporation’s
high-quality access control hardware products, which can be
integrated with the Johnson Controls® P2000 Security Management
System (SMS), providing added flexibility to help you meet the needs
of your site’s security requirements, using products from a well-known
and time-tested security manufacturer.
The DM-21 Mercury intrusion display provides an interactive link to the
P2000 Security Management System, enabling system operators to
perform various intrusion-related tasks. The DM-21 displays text as
sent by the controller, providing alarm status feedback or other
freeform messaging or instructions that the system generates.
In a P2000 intrusion application, the DM-21 intrusion display allows
operators to arm and disarm areas of the facility, and bypass zones,
directly from the device. The P2000 software enables administrators
to define and manage logical intrusion components (areas and zones).
The DM-21 combines a 32-character LCD display and a multi-position
keypad. Even in challenging settings, the backlit LCD yields clear
information displays. The keypad features standard numerics and four
function keys to select display options. The unit connects to the
system via a 2-wire RS-485 link or a TTL connection.
DM-21 Mercury Intrusion Display
DM-21 Technical Specifications
Item
Specification
Humidity
10% to 93% Relative Humidity Non Condensing (RHNC)
Mounting
Surface mount or 3-gang box
Compliance
United States:
UL Listed Equipment under UL 1076 for Proprietary
Burglar Alarm Units and Systems, and under UL 294 for
Access Control Systems Units;
FCC compliant to the limits for a Class A digital device,
pursuant to Part 15 of the FCC rules
Canada:
cUL Listed Equipment under ULC/ORD-C1076
Proprietary Burglar Alarm Units and System;
Class A digital apparatus, complies with Canadian
ICES-003
Europe:
CE Mark - Johnson Controls, Inc., declares that this
product is in compliance with the EMC Directive 
2004/108/EC
Australia and New Zealand:
C-Tick Mark, Australia/NZ emissions compliant
Application Notes
The DM-21 intrusion display is a core component that provides robust
communications functionality within Mercury’s building block approach
to system design. When combined with Mercury’s EP series of
intelligent access platforms, the unit brings an interactive link and truly
integrated functionality to the terminal, a major plus for end-user
convenience and satisfaction.
Benefits
•
•
•
•
•
User-friendly interaction with system
Improves overall system ease-of-use
For use in a P2000 intrusion application
User can perform commands for Intrusion Zones and Intrusion
Areas
Accessibility to keypad controlled by P2000 Access Groups feature
Part Number
Description
DM-21
DM-21 Mercury Intrusion Display
Related Documentation
Features
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•
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Ordering Information
16-position backlit keypad
32-character LCD
Static discharge protected
Technical Specifications
Document Title
Document Number
DM-21 Intrusion Display Hardware Installation
Manual
Part No. 24-10707-104
Mercury Products Open Platform Solution
Product Bulletin
LIT-12011850
DM-21 Technical Specifications
Item
Specification
Extended User
Prompts user for command
Commands
Echoes back entries
Command feedback
Primary Power
12 VDC +/- 15%, 175 mA (not including reader power)
Serial Port
Port 1: 2-wire RS-485 (twisted pair with shield)
LED
Two wire or one-wire bi-color support
Buzzer
Only with one-wire LED
Keypad
4 x 4, backlit
Display
2 lines, 16 characters/line, backlit
7.5 mm character height typical
Dimensions
6.75 in. W x 5.0 in. L x 1.0 in. D
(172 mm W x 127 mm L x 25 mm D)
Temperature
Operational: 0° to 49°C
Storage: -20° to 70°C
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
www.johnsoncontrols.com
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2014 Johnson Controls, Inc.
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DM-21 Mercury Intrusion Display (Continued)
P2000 Server
P2000
Workstation
Wide Area
Network
IP Network
CKM-EP1502
CKM-EP2500/1501/1502
Controller
RS-485
DM-21
DM-21
DM-21
Architecture Diagram of the DM-21 Mercury Intrusion Keypad
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
www.johnsoncontrols.com
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2014 Johnson Controls, Inc.
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