SO Pulse Output
Provides one pulse output for integration with compatible pulse-input devices and data-acquisition systems.
DEM1E001 45 A Single-Phase DIN-Rail Energy Meter with SO Pulse Output
DEM1E001 is a single-phase, direct-connected DIN-rail energy meter for 1P2W systems, rated up to 45 A. It provides one SO Pulse Output, Class 0.5 active-energy accuracy and flexible import/export energy calculation. This battery-free, communication-free variant has no tariff function.
DIN-Rail Mounting (1P (18 mm))
1P2W Direct Connection
MID B+D Certified
MID
45A Maximum current (Imax)
120–230 V Rated voltage
Class 0.5 Active energy accuracy
-40~+70℃ Operating temperature
Product Highlights
Compact Energy Metering with SO Pulse Output
Class 0.5 Active Energy Accuracy
Class 0.5 active-energy and Class 1 reactive-energy measurement in accordance with IEC 62053-21.
Flexible Energy Calculation
Supports forward, reverse, absolute-value, algebraic-sum and net-energy calculation modes.
Full-Parameter Measurement
Measures voltage, current, energy, active/reactive power, power factor, frequency and harmonic content.
MID B+D Certified by SGS UK
MID B+D certified, confirming accuracy and quality for sub-billing applications across the EU.
Compact 1P DIN-Rail Design
18 mm × 94 mm × 62.4 mm 1P DIN-rail housing for easy installation in distribution panels. Battery-free with no tariff functions, for simple pulse-based submetering.
Applications
Applications and Selection Guidance
EV Charging Metering
Solutions for AC/DC charging, billing and charging platform integration.
Explore ApplicationSolar PV & ESS Metering
DC/PV monitoring for inverters, storage systems and distributed energy monitoring.
Explore ApplicationC&I Sub-Metering
Branch metering for buildings, factories, tenants and energy allocation.
Explore ApplicationData Center Energy Metering
Rack, cabinet and distribution power monitoring for data center operations.
Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct connected |
| Rated voltage | 120-230V |
| Voltage tolerance | 0.8 to 1.15 Un |
| Frequency | 50/60Hz |
| Current connection | Direct connected |
| Basic current (Ib) | 5A |
| Minimum current (Imin) | 0.15A (MID) / 0.25A (IEC) |
| Maximum current (Imax) | 45A |
| Pulse constant | 1000 imp/kWh |
| Power consumption | ≤2W / 10VA |
| Voltage accuracy | ≤0.5% |
| Current accuracy | ≤0.5% |
| Frequency accuracy | ≤0.5% |
| Active power accuracy | ≤0.5% |
| Reactive power accuracy | ≤1% |
| Active energy accuracy | Class 0.5 |
| Reactive energy accuracy | Class 1 |
| Pulse output | 1-channel SO pulse output |
| LCD display | 6+2 digit display |
| LCD refresh time | 500ms |
| LED | Red pulse LED |
| Buttons | Page turning, setting |
| Protection rating | IP20 |
| Overvoltage category | OVC III |
| Electrical protection | Class II |
| Rated impulse voltage | 6kV |
| Mounting | 1P DIN rail |
| Wiring | Direct connected, 1P2W |
| Operating temperature | -40°C to +70°C |
| Storage temperature | -40°C to +70°C |
| Relative humidity | ≤95%, non-condensing |
| Altitude | ≤2000m |
| Applicable standards | IEC 62052-11:2020 / IEC 62053-21:2020 / IEC 62053-24:2020 / EN 50470-3:2022 |
Structure & Dimensions
DEM1E001 Dimensions & Wiring
Dimensions
Wiring
FAQ
DEM1E001 FAQ
Does DEM1E001 support RS485 or Modbus communication?
No. DEM1E001 provides one SO pulse output and does not support RS485, Modbus RTU or DL/T 645 communication. Select DEM1E202 or DEM1E302 when RS485 communication is required.
What is the maximum current of DEM1E001?
DEM1E001 is a direct-connected single-phase meter rated up to 45A.
What applications is DEM1E001 suitable for?
It is suitable for pulse-based energy monitoring in AC EV charging, solar PV and BESS, tenant submetering, and factory or equipment monitoring projects.
Does DEM1E001 support bidirectional energy measurement?
Yes. It supports forward and reverse energy measurement with multiple energy calculation modes, including absolute-value and algebraic calculation.
What is the installation size?
DEM1E001 uses a compact 1P DIN-rail housing measuring 18mm × 94mm × 62.4mm.
What is the difference between DEM1E001, DEM1E202 and DEM1E302?
DEM1E001 provides SO pulse output without RS485 communication. DEM1E202 provides RS485 communication and external two-rate tariff switching. DEM1E302 adds battery-backed RTC and TOU tariff scheduling.
Is MID documentation available?
The DEM1E series specification lists MID certification. Contact YTL for the applicable certificate and model coverage required for your market or project.
What environmental conditions can it withstand?
The operating temperature range is -40°C to +70°C, with relative humidity up to 95% non-condensing.
Product Downloads
Product Datasheet Download
Datasheet
YTL DEM1E Series Datasheet
Official DEM1E series datasheet covering product overview, specifications, wiring and dimensions.
Download PDF- Product overview and features
- Technical specifications
- Wiring diagrams and dimensions
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