DMS-20PC-1-LM www.murata-ps.com Self-Powered 3 Digit, LED Display AC Line Voltage Monitors FEATURES Murata Power Solutions’ DMS-20PC-1-LM is a component-size, self-contained, low-cost Plugs directly into USA-style wall outlets 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 Screw terminals for panel mounting (47-63Hz). The large (0.37"/9.4mm), bright red, blue or green LED display makes the Small 1.38" x 0.88" x 1.0" packages DMS-20PC-1-LM easily readable under any lighting conditions. Large, easy-to-read, red, blue or green LED displays DMS-20PC-1-LM employs half-wave sinusoidal averaging (rms calibrated) and has DMS-20PC-1-LM-F Fully encapsulated for harsh environments (Blade Terminals) a display resolution of 1Vac over its full input Half-wave averaging, rms calibrated range. Packaged in a red-fi lter case with built- ® 8C48 UL, CSA and IEC1010-1 certifi ed in bezel, the meter is fully encapsulated for ruggedness. All units are overvoltage protected Very low cost! to 300Vac. This low-cost meter is ideal for industrial, C® US E156931 laboratory, offi ce and fi eld-service applica- Functional Specifi cations tions. Its miniature size is perfect for design into high-end consumer electronics, laboratory DMS-20PC-1-LM Input instrumentation and other products requiring (Panel Mount) Voltage Range ➀ 85-264Vrms accurate ac line monitoring. Suggested wiring (user supplied) UL/IEC61010-1 Measurement Category II Frequency Range ➀ 47-63Hz Current Consumption 50mArms (max.) Ordering Information Performance Sampling Rate 2.5 readings/second DMS-20PC-1-LM-C Red LED with threaded standoffs ➁ Measurement Type Half-wave average, rms DMS-20PC-1-LM-B-C Blue LED with threaded standoffs ➁ calibrated for sinusoidal input DMS-20PC-1-LM-G-C Green LED with threaded standoffs ➁ Accuracy @ +25°C ±1V (typ.), ±2V (max.) DMS-20PC-1-LM-F-C Red LED with blade terminals Temperature Drift DMS-20PC-1-LM-BF-C Blue LED with blade terminals (–25 to +60°C) ±0.15 Volts/°C (max.) DMS-20PC-1-LM-GF-C Green LED with blade terminals DMS-20-CP Optional panel cutout punch Mechanical DMS-BZL3-C Optional panel mount bezel Dimensions 1.38" x 0.88" x 1.00" DMS-BZL4-C Optional panel mount bezel with sealing gasket Display Type 3 digit, red LED, 0.37"/9.4mm Weight 1 ounce (28 grams) ➁ Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with meter. 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% ➀ Operation and accuracy at inputs above or below these ranges are not specifi ed. CURRENT LIMITED AC SUPPLY For full details go to www.murata-ps.com/rohs Typical Connection Diagram www.murata-ps.com/support MPM_DMS-20PC-1-LM.D01 Page 1 of 2

DMS-20PC-1-LM Self-Powered 3 Digit, LED Display AC Line Voltage Monitors Power Supply Polarity, Grounding, Fusing, and Wiring 1. Polarity and Grounding: 3. UL Listed Models with “Plug-in” Blade Terminals: DMS-20PC-1-LM’s two ac-supply input terminals are not polarity sensitive, that is, they have no “AC LO” or “AC HI” designations. These units do not include nor require a connection to earth/chassis ground. All ac-supply wiring Plug-in DMS-20PC-1-LM-XF models are not internally fused and must be must be rated for the voltages and currents they will conduct and comply protected by an external current limiting circuit breaker or fuse in accordance with any code or application-mandated requirements pertaining to the user’s with applicable regulatory codes. These models are designed to be plugged specifi c installation. Additional model-specifi c information is provided below. into NEMA 1-15R, NEMA 5-15R, and NEMA 5-20R receptacles. 2. UL Recognized Panel Mount Models with Screw Terminals: 4. Description of the safety marks: Caution, risk of electrical shock C® US E156931 Caution, risk of danger DMS-20PC-1-LM AC voltmeters are not internally fused. The supply wires feeding these voltmeters must be fused with a 0.25A/250V time delay/time lag Equipment is protected throughout by double or reinforced insulation fuse, in accordance with applicable regulatory codes. The rear threaded stand- off input-terminals are to be used only for powering the voltmeter’s internal 5. Cleaning Instructions: Gently clean with dry cloth only. circuitry; they must not be used to supply power to external loads. The recommended wire size is 16AWG to 20AWG (1.31mm2 to 0.52mm2) 6. Caution: if the equipment is used in a manner not specifi ed by Murata stranded copper wire. Wires must be properly stripped and attached to the Power Solutions, the protection provided by the equipment may be threaded standoffs such that their insulation is not pinched by the supplied impaired. 6-32 screws. Rated tightening torque for the 6-32 screws is 7 to 8 pound- inches (0.8 to 0.9N-m). 300V UL rated wire suitable for the intended applica- tion is required. 1.30 (33.0) ML-1-CP02-SMD 0.04 (1.016) 0.04 0.04 #6-32 (1.016) (1.016) 1.38 UNC THD (35.1) 0.44 (11.2) 0.80 0.88 0.37 (20.3) (22.4) (9.4) 0.75 0.32 1.00 (19.1) (8.1) (25.4) 0.19 #2-56 INSERT (4.8) 0.156 (3.96) DEEP 1.07 DMS-BZL3-C 1.28 (27.2) Optional Bezel (32.5) Dimensions in inches (millimeters) Tolerances: 2 PL Dec ±0.02 (±0.51) 3 PL Dec ±0.010 (±0.254) 0.10 1.63 (41.4) (02.1.50) Recommended panel cutout dimensions: (2.5) 1.336 (33.93)W × 0.838 (21.29)H 1.83 (46.5) Internal corner radii 0.032 (0.81) Max. This product is subject to the following operating requirements Murata Power Solutions, Inc. and the Life and Safety Critical Application Sales Policy: 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 U.S.A. Refer to: http://www.murata-ps.com/requirements/ ISO 9001 and 14001 REGISTERED 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. www.murata-ps.com/support MPM_DMS-20PC-1-LM.D01 Page 2 of 2

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M urata: DMS-20PC-1-LM-B-C DMS-20PC-1-LM-BF-C DMS-20PC-1-LM-C DMS-20PC-1-LM-F-C DMS-20PC-1-LM-G-C DMS-20PC-1-LM-GF-C