Murata Power Solutions’ DMS-20PC-1-LM is a component-size, self-contained, low-cost
ac voltmeter for true line measurements. It requires no additional components or auxiliary
power. Simply plug it into any wall outlet and instantly read voltages from 85 to 264Vac
(47-63Hz). The large (0.37"/9.4mm), bright red, blue or green LED display makes the
DMS-20PC-1-LM easily readable under any lighting conditions.
DMS-20PC-1-LM employs half-wave
sinusoidal averaging (rms calibrated) and has
a display resolution of 1Vac over its full input
range. Packaged in a red-fi lter case with built-
in bezel, the meter is fully encapsulated for
ruggedness. All units are overvoltage protected
to 300Vac.
This low-cost meter is ideal for industrial,
laboratory, offi ce and fi eld-service applica-
tions. Its miniature size is perfect for design
into high-end consumer electronics, laboratory
instrumentation and other products requiring
accurate ac line monitoring.
C®US E156931
®
8C48
➀ Operation and accuracy at inputs above or below these ranges are not specifi ed.
DMS-20PC-1-LM-C Red LED with threaded standoffs ➁
DMS-20PC-1-LM-B-C Blue LED with threaded standoffs ➁
DMS-20PC-1-LM-G-C Green LED with threaded standoffs ➁
DMS-20PC-1-LM-F-C Red LED with blade terminals
DMS-20PC-1-LM-BF-C Blue LED with blade terminals
DMS-20PC-1-LM-GF-C Green LED with blade terminals
DMS-20-CP Optional panel cutout punch
DMS-BZL3-C Optional panel mount bezel
DMS-BZL4-C Optional panel mount bezel with sealing gasket
➁ Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with meter.
Ordering Information
Functional Specifi cations
Input
Voltage Range ➀ 85-264Vrms
UL/IEC61010-1 Measurement Category II
Frequency Range ➀ 47-63Hz
Current Consumption 50mArms (max.)
Performance
Sampling Rate 2.5 readings/second
Measurement Type Half-wave average, rms
calibrated for sinusoidal input
Accuracy @ +25°C ±1V (typ.), ±2V (max.)
Temperature Drift
(–25 to +60°C) ±0.15 Volts/°C (max.)
Mechanical
Dimensions 1.38" x 0.88" x 1.00"
Display Type 3 digit, red LED, 0.37"/9.4mm
Weight 1 ounce (28 grams)
Case Material Polycarbonate
6-32 screw torque 6-8 in-lb (0.7 – 0.9N-m)
Environmental
Operating Temperature –25 to +60°C
Storage Temperature –40 to +75°C
Humidity (Non-condensing) 0 to 95%
CURRENT
LIMITED
AC SUPPLY
www.murata-ps.com
www.murata-ps.com/support
For full details go to
www.murata-ps.com/rohs
DMS-20PC-1-LM
Self-Powered 3 Digit, LED Display
AC Line Voltage Monitors
MPM_DMS-20PC-1-LM.D01 Page 1 of 2
FEATURES
Plugs directly into USA-style wall outlets
Screw terminals for panel mounting
Small 1.38" x 0.88" x 1.0" packages
Large, easy-to-read, red, blue or green LED displays
Fully encapsulated for harsh environments
Half-wave averaging, rms calibrated
UL, CSA and IEC1010-1 certifi ed
Very low cost!
DMS-20PC-1-LM-F
(Blade Terminals)
DMS-20PC-1-LM
(Panel Mount)
Suggested wiring (user supplied)
Typical Connection Diagram