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Wenzhou Legy Electric Meter Technology Co., Ltd., established in 2002 in Wenzhou, China, is a specialized manufacturer dedicated to the research, development, and production of Single Phase Multifunction Energy Meters. As a trusted B2B supplier, our factory delivers comprehensive power quality monitoring solutions that go beyond basic energy measurement for industrial facilities, commercial buildings, and energy management system integrators. Leveraging over two decades of electrical manufacturing expertise, every multifunction meter is built with rigorous quality control, ISO9001 certification, and international safety approvals including CE, CB, and ROHS. We combine precision metering with advanced power analysis capabilities to provide global partners with reliable products that enable data-driven energy optimization and proactive electrical maintenance.
A Single Phase Multifunction Energy Meter is an advanced electronic instrument that measures and records not only energy consumption but also a comprehensive set of electrical parameters including voltage, current, power, power factor, frequency, and harmonic distortion. It integrates precision energy measurement with real-time power quality analysis and data logging capabilities, providing a complete picture of electrical system performance. Belonging to the category of power quality monitoring instruments, it is an essential tool for energy audits, equipment protection, and predictive maintenance, enabling users to identify inefficiencies, prevent equipment damage, and optimize power usage in single-phase applications.
Single Phase Multifunction Energy Meter features a 3-line LCD screen that simultaneously displays voltage, current, and active power, with a dedicated "MOD" key to cycle through power factor, reactive power, and frequency on the top line, eliminating the need for complex menu navigation.
Uses physical buttons for local configuration of CT/PT ratios and zero-point correction, with a shift+increase key combination to set decimal points, allowing electricians to calibrate the meter on-site without a laptop or communication software.
Supports both fixed display mode (locking to a specific parameter like kWh) and auto-cycle mode (automatically rotating through all measured values at a set interval), catering to both quick reading and comprehensive monitoring needs.
Equipped with a wide-viewing-angle LCD screen and white backlight, ensuring clear readability in dimly lit distribution rooms or during nighttime inspections without requiring external lighting.
Non-volatile memory stores cumulative energy and parameter data for over 10 years without power, with no communication module or cloud dependency, ensuring data integrity even in environments with no network coverage.
The 3-line simultaneous display allows electricians to see voltage, current, and power at a glance, reducing troubleshooting time by 50% compared to single-line meters that require repeated button presses to view different parameters.
Single Phase Multifunction Energy Meter operates entirely offline with no RS485, Modbus, or IoT modules, eliminating communication failures, protocol mismatches, and cybersecurity risks associated with smart meters, making it ideal for sites with no network infrastructure.
Physical button configuration with decimal point adjustment allows on-site calibration of CT/PT ratios and zero-point correction without specialized tools or software, reducing commissioning time and eliminating the need for technical support visits.
Simple button layout with only 4 keys (MOD, shift, increase, decrease) and no complex menus, enabling maintenance staff with basic electrical knowledge to operate the meter without training, reducing human error in parameter reading.
Delivers comprehensive electrical parameter measurement at a fraction of the cost of smart multifunction meters, providing essential monitoring capabilities without the premium price of communication modules and cloud services.
Single Phase Multifunction Energy Meter monitors power quality and energy consumption for individual machines, identifying inefficient equipment and optimizing production schedules to reduce energy costs while maintaining product quality.
Tracks power factor and harmonic distortion for critical IT equipment, preventing equipment damage from power quality issues and ensuring uninterrupted operation of sensitive electronic systems.
Measures energy consumption and power quality for individual tenants, enabling fair cost allocation and identifying energy waste patterns to reduce operational costs through targeted efficiency improvements.
Monitors power quality for critical medical equipment, ensuring uninterrupted operation of life-support systems and preventing equipment damage from voltage fluctuations or harmonic distortion.
Provides comprehensive electrical parameter data and interval logging for detailed energy audits, identifying optimization opportunities and supporting compliance with energy efficiency regulations and sustainability certifications.
Monitors power quality and energy flow for solar PV and battery storage systems, ensuring grid compliance and optimizing self-consumption through real-time power quality analysis.
A: Press the "MOD" key to cycle through the top line display options, which include power factor, reactive power, frequency, and harmonic data. The middle and bottom lines remain fixed on current and voltage respectively, allowing you to view multiple parameters simultaneously without navigating through sub-menus.
A: Yes, the meter features physical button configuration for CT/PT ratio setup. Press and hold the "MOD" key to enter the parameter menu, use the shift and increase keys to adjust the ratio value, and press "MOD" again to confirm. The decimal point can be set by pressing the shift and increase keys simultaneously, allowing complete on-site calibration without any external devices.
A: The meter uses non-volatile memory to store all cumulative energy and parameter data, which is retained for over 10 years without power. When power is restored, the meter resumes normal operation with all historical data intact, and the LCD backlight automatically turns on to display the current parameters.
Wenzhou Legy Electric Meter Technology operates a dedicated 5,000㎡ production line for Single Phase Multifunction Energy Meters, equipped with automated display calibration stations and environmental simulation chambers that replicate indoor distribution room conditions including -25°C to +55°C temperature cycles and 95% humidity. Our quality assurance process includes 100% display accuracy verification, physical button durability testing (50,000+ cycles), and non-volatile memory retention validation, ensuring every meter meets multi-parameter monitoring standards before shipment. We offer specialized OEM/ODM services for display-focused multifunction meters, including custom LCD layouts, button configuration modifications, and enclosure adjustments for specific panel cutouts, with a minimum order quantity of 200 units and a 25-day lead time for customized models. Our export team has 18+ years of experience handling industrial equipment logistics, including customs clearance for markets with strict metering regulations such as the EU, North America, and Southeast Asia.
We specialize in supporting industrial and commercial partners with technical expertise focused on display functionality and offline operation, offering free LCD layout consulting, physical button configuration assistance, and on-site commissioning support for complex distribution room installations. Our engineering team has extensive experience with display-focused multifunction meter deployments across manufacturing, commercial building, and energy audit sectors, enabling us to provide tailored solutions that address specific operational challenges such as parameter visibility, field calibration, and offline data retention. We actively collaborate with panel manufacturers and distribution room designers to ensure our meters fit seamlessly into existing infrastructure, reducing installation complexity and accelerating deployment for our partners. Our cooperative approach focuses on long-term operational success through display-focused technical partnership rather than transactional sales, and we are committed to becoming a trusted technical partner for organizations seeking reliable, offline multi-parameter monitoring solutions.
