Functional Specifi cations
MPM_DMS-20LCD-01-DCM.C01 Page 1 of 2
DMS-20LCD-0/1 Series
Self-Powered, +12V and +24V, LCD Display
2-Wire DC Voltage Monitors
www.murata-ps.com
www.murata-ps.com/support
For full details go to
www.murata-ps.com/rohs
Murata Power Solutions’ new DMS-20LCD-0/1-DCM, self-contained, self-powered, dc
voltage monitors set new standards for quality, performance, size and cost. Simply apply
power to the two rear terminals and the unit is operational. No additional components are
required! The large, 0.37”/9.4mm, LCD display, with
built-in “VDC” annunciator, can be easily read from 10
feet. Two models are available: one for 12Vdc nominal
operation (+6.50-18.00V range, 0.01V resolution),
the other for 24Vdc nominal operation (+8.0-50.0V
range, 0.1V resolution). Reverse polarity protection is
standard on both models.
The DMS-20LCD-DCM utilizes a precision
analog-todigital converter and ultra-stable passive
components to achieve excellent performance over the
operating temperature range of 0 to +60°C. A rugged,
ABS plastic package provides excellent protection
against shock and vibration. DMS-20LCD-DCM’s are
without a doubt the most costeffective, LCD-display,
digital voltmeters available anywhere, at any price.
FEATURES
Self-powered, only two connections required
+6.50-18.00Vdc (0.01V resolution) or
+8.0-50.0Vdc (0.1V resolution) input ranges
Ideal for battery-powered systems
Reverse polarity protected
Built-in “VDC” annunciator
Large (0.37”/9.4mm) LCD displays
Subminiature 1.38” x 0.88” x 0.66” packages
Rugged, ABS package
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter.
➀ Operation and accuracy at voltages above or below these ranges
are not specifi ed.
➁ Meters are not sealed; Do not expose to moisture or other contaminants.
DMS-20LCD-0-DCM-C +6.50 to 18.00V dc voltage monitor
DMS-20LCD-1-DCM-C +8.0 to 50.0V dc voltage monitor
DMS-20-CP Panel cutout punch
DMS-BZL3-C Panel mount bezel
DMS-BZL4-C Panel mount bezel with sealing gasket
Ordering Information
Input
Voltage Range: ➀
DMS-20LCD-0-DCM +6.50 to +18.00Vdc
DMS-20LCD-1-DCM +8.0 to +50.0Vdc
Max. Current Consumption:
DMS-20LCD-0-DCM 2mA @+12V, 7mA @ +18V
DMS-20LCD-1-DCM 2mA @ +24V, 6mA @ +50V
Performance
Sampling Rate 2.5 readings/second
Accuracy @ +25°C:
DMS-20LCD-0-DCM ±0.01V (typ.), ±0.03V (max.)
DMS-20LCD-1-DCM ±0.1V (typ.), ±0.2V (max.)
Temperature Drift (0 to +60°C):
DMS-20LCD-0-DCM ±0.4 counts/°C (max.)
DMS-20LCD-1-DCM ±0.04 counts/°C (max.)
Mechanical
Display Type:
DMS-20LCD-0-DCM 3½ digit LCD, 0.37"/9.4mm high
DMS-20LCD-1-DCM 3 digit LCD, 0.37"/9.4mm high
Weight 0.5 ounce (14 grams)
Case Material ABS
Environmental ➁
Operating Temperature 0 to +60°C
Storage Temperature –20 to +75°C
Humidity (Non-condensing) 0 to 85%
Typical panel mount installation and
suggested wiring (user supplied).
MPM_DMS-20LCD-01-DCM.C01 Page 2 of 2
DMS-20LCD-0/1 Series
Self-Powered, +12V and +24V, LCD Display
2-Wire DC Voltage Monitors
www.murata-ps.com/support
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifi cations are subject to change without
notice. © 2015 Murata Power Solutions, Inc.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Dimensions in inches (millimeters)
Tolerances: 2 PL Dec ±0.02 (±0.51)
3 PL Dec ±0.010 (±0.254)
Recommended panel cutout dimensions: 1.336 (33.93)W × 0.838 (21.29)H
Internal corner radii 0.032 (0.81) Max.
DC
1.30
(33.0)
1.38
(35.1)
0.025
(0.64)
0.880
(22.4)
0.04
(1.016)
0.43
(10.9)
0.66
(16.8)
0.04
(1.016)
0.04
(1.016)
0.37
(9.4)
0.800
(20.3)
0.38
(9.7)
0.25 DIA.
–
+
0.27
(6.9)
0.75
(19.1)
#6-32
UNC THD
0.10
(2.5)
0.19
(4.8)
1.63 (41.4)
1.83 (46.5)
1.28
(32.5)
1.07
(27.2)
0.10
(2.5)
#2-56 INSERT
0.156 (3.96 DEEP)
DMS-BZL3
OPTIONAL BEZEL
