LMB4-63 Series Din Rail Energy Meter | WIFI / RS485 Multifunction Power Meter
LMB4-63 Series Din Rail Energy Meter | WIFI / RS485 Multifunction Power Meter
The LMB4-63 series is a multifunctional single-phase DIN rail energy monitor available in 3 variants: standard local control, WIFI smart remote version, and RS485 Modbus communication model. Equipped with a colorful LCD screen, it real-time measures voltage, current, power, energy, frequency, power factor and temperature. Built-in relay switch supports overvoltage, overcurrent and over-temperature auto-cutoff protection. Compact 1-module DIN rail design fits standard distribution boxes, widely used for household power monitoring, solar systems, factory equipment power data collection and intelligent building control.
The LMB4-63 series is a multifunctional single-phase DIN rail energy monitor available in 3 variants: standard local control, WIFI smart remote version, and RS485 Modbus communication model. Equipped with a colorful LCD screen, it real-time measures voltage, current, power, energy, frequency, power factor and temperature. Built-in relay switch supports overvoltage, overcurrent and over-temperature auto-cutoff protection. Compact 1-module DIN rail design fits standard distribution boxes, widely used for household power monitoring, solar systems, factory equipment power data collection and intelligent building control.
1. Product Overview
The LMB4-63W series is a compact single-phase DIN rail multifunction power monitoring meter, developed for real-time electrical parameter measurement and safety protection. The product line covers three complete models to meet different control demands:
- LMB4-63：Basic Version: Local button setting, independent on-off control without communication
- LMB4-63W：WIFI Smart Version: Mobile APP remote monitoring & relay control, cloud data storage
- LMB4-63R：RS485 Modbus Version: Industrial RS485 communication, PLC & SCADA system data docking
All models integrate colorful LCD display, built-in temperature sensor and auto-protection relay. It tracks full electrical metrics and triggers automatic power cut when exceeding preset voltage, current or temperature thresholds. Standard 35mm DIN rail mounting saves cabinet space, perfect for residential distribution boxes, solar PV systems, industrial equipment control panels and intelligent energy management projects.
2. Core Product Features
1. Three Versions for All Application Scenarios
- LMB4-63 (Standard): Local three-button operation, local parameter setting, no communication function, ideal for simple household power monitoring
- LMB4-63W (WIFI): Built-in WIFI module, compatible with smart APP, remote real-time data view, timing switch, overload alarm push, cloud historical energy storage
- LMB4-63R (RS485 Modbus): Standard RS485 interface, Modbus-RTU protocol, supports multi-meter bus connection, data upload to PLC, industrial monitoring platform
2. Full-Range Multifunction Measurement
Real-time simultaneous display of all critical electrical parameters on colored LCD:
- AC Voltage, AC Current, Active Power, Cumulative kWh Energy
- Power Factor, Frequency, Running Time, Internal Temperature
- Visual colored font differentiation for easy reading under any light condition
3. Intelligent Safety Protection Relay
Built-in high-capacity control relay with fully customizable threshold alarms:
- Overvoltage protection, Undervoltage protection
- Overcurrent overload protection
- Over-temperature auto power cutoff
- Automatically disconnect load when parameters exceed set value, avoid equipment burnout and fire risks; manual reset after fault elimination
4. Compact DIN Rail Modular Design
- 1-unit standard 35mm DIN rail width, fits all standard distribution boxes
- Flame-retardant insulating housing, anti-interference internal circuit
- NTC temperature probe reserved port for external extended temperature detection
- Up/down dual L/N wiring terminals, simple wiring without confusion
5. Stable Long-Term Performance
- Wide operating voltage range, adapt to unstable grid voltage
- Low measurement error, high-precision sampling chip
- Long service life of LCD screen and internal relay
- Anti-electromagnetic interference circuit, stable data in industrial environments
3. Working Conditions
This energy monitor is designed to work stably under standard indoor environmental parameters:
- Ambient working temperature: -10℃ ~ +55℃
- Protection class: IP20, only for indoor installation inside distribution cabinets, not for outdoor exposed environment
- Surrounding atmosphere: No corrosive gas, flammable dust or strong conductive dust
- Altitude: Normal performance below 2000 meters above sea level
- Electromagnetic environment: Suitable for low and medium electromagnetic interference indoor scenes; stay away from high-power frequency conversion equipment
- Humidity: Relative humidity ≤85%, no condensation allowed
4. Technical Specifications
| Parameter | Unified Specification for LMB4-63 Series |
|---|---|
| Model Types | LMB4-63 (Basic) / LMB4-63W (WIFI) / LMB4-63R (RS485 Modbus) |
| Measuring System | Single-phase AC 2-wire (L+N) |
| Working Voltage Range | AC 85V ~ 265V 50Hz |
| Rated Measuring Current | 0~100A built-in CT |
| Measurement Precision | Voltage/Current ±0.5%; Power/Energy ±1% |
| Display | Colorful LCD digital screen |
| Control Output | Built-in relay, max load switch current 100A |
| Communication Interface | Basic: None; WIFI: 2.4G WIFI; RS485: Modbus-RTU |
| Mounting | Standard 35mm DIN rail (1 module width) |
| Housing Material | Flame-retardant ABS plastic |
| Protection Functions | Overvoltage / Undervoltage / Overcurrent / Over-temperature auto cut-off |
| External Interface | NTC temperature sensor port |
5. Typical Applications
- Household main circuit power monitoring & overload protection
- Solar off-grid / grid-tied PV system energy statistics
- Small industrial machine equipment power monitoring
- Rental room electricity metering and remote power management
- Intelligent building, smart home electrical control cabinet
- Factory workshop centralized energy monitoring system
- Charging pile small power distribution monitoring
6. Frequently Asked Questions (FAQ)
1. What’s the core difference between the three LMB4-63 models?
- LMB4-63 Standard: Only local button operation, no remote communication, cost-effective for basic monitoring
- LMB4-63W WIFI: Mobile APP remote view, remote switch control, alarm push and cloud data storage for smart home/rental houses
- LMB4-63R RS485: Industrial Modbus communication, can connect multiple meters to PLC/industrial host for centralized data collection
2. Does this meter support overload automatic power off?
Yes. All three versions support customizable overvoltage, undervoltage, overcurrent and over-temperature thresholds. When the measured value exceeds your preset limit, the internal relay will cut off the load circuit automatically for safety protection.
3. Can the WIFI version work without a router?
No. The LMB4-63W needs 2.4GHz WIFI router connection to upload data to mobile APP and cloud. It does not support 5G WIFI signal.
4. What protocol does the RS485 version use?
LMB4-63R adopts standard Modbus-RTU industrial protocol, compatible with most PLC, touch screen and industrial energy monitoring hosts, supporting multi-meters bus networking.
5. Is this energy meter legal for commercial billing?
This device is a multifunction power monitoring meter for load protection and energy statistics, not certified as legal trade metering meter for official electricity billing. It is recommended for internal power consumption monitoring only.
6. Can I install multiple meters in one distribution box?
Yes. It adopts standard 1-module DIN rail size, you can install several LMB4-63 series meters side by side on 35mm DIN rail without occupying extra cabinet space.
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
1. Product Overview
The LMB4-63W series is a compact single-phase DIN rail multifunction power monitoring meter, developed for real-time electrical parameter measurement and safety protection. The product line covers three complete models to meet different control demands:
- LMB4-63：Basic Version: Local button setting, independent on-off control without communication
- LMB4-63W：WIFI Smart Version: Mobile APP remote monitoring & relay control, cloud data storage
- LMB4-63R：RS485 Modbus Version: Industrial RS485 communication, PLC & SCADA system data docking
All models integrate colorful LCD display, built-in temperature sensor and auto-protection relay. It tracks full electrical metrics and triggers automatic power cut when exceeding preset voltage, current or temperature thresholds. Standard 35mm DIN rail mounting saves cabinet space, perfect for residential distribution boxes, solar PV systems, industrial equipment control panels and intelligent energy management projects.
2. Core Product Features
1. Three Versions for All Application Scenarios
- LMB4-63 (Standard): Local three-button operation, local parameter setting, no communication function, ideal for simple household power monitoring
- LMB4-63W (WIFI): Built-in WIFI module, compatible with smart APP, remote real-time data view, timing switch, overload alarm push, cloud historical energy storage
- LMB4-63R (RS485 Modbus): Standard RS485 interface, Modbus-RTU protocol, supports multi-meter bus connection, data upload to PLC, industrial monitoring platform
2. Full-Range Multifunction Measurement
Real-time simultaneous display of all critical electrical parameters on colored LCD:
- AC Voltage, AC Current, Active Power, Cumulative kWh Energy
- Power Factor, Frequency, Running Time, Internal Temperature
- Visual colored font differentiation for easy reading under any light condition
3. Intelligent Safety Protection Relay
Built-in high-capacity control relay with fully customizable threshold alarms:
- Overvoltage protection, Undervoltage protection
- Overcurrent overload protection
- Over-temperature auto power cutoff
- Automatically disconnect load when parameters exceed set value, avoid equipment burnout and fire risks; manual reset after fault elimination
4. Compact DIN Rail Modular Design
- 1-unit standard 35mm DIN rail width, fits all standard distribution boxes
- Flame-retardant insulating housing, anti-interference internal circuit
- NTC temperature probe reserved port for external extended temperature detection
- Up/down dual L/N wiring terminals, simple wiring without confusion
5. Stable Long-Term Performance
- Wide operating voltage range, adapt to unstable grid voltage
- Low measurement error, high-precision sampling chip
- Long service life of LCD screen and internal relay
- Anti-electromagnetic interference circuit, stable data in industrial environments
3. Working Conditions
This energy monitor is designed to work stably under standard indoor environmental parameters:
- Ambient working temperature: -10℃ ~ +55℃
- Protection class: IP20, only for indoor installation inside distribution cabinets, not for outdoor exposed environment
- Surrounding atmosphere: No corrosive gas, flammable dust or strong conductive dust
- Altitude: Normal performance below 2000 meters above sea level
- Electromagnetic environment: Suitable for low and medium electromagnetic interference indoor scenes; stay away from high-power frequency conversion equipment
- Humidity: Relative humidity ≤85%, no condensation allowed
4. Technical Specifications
| Parameter | Unified Specification for LMB4-63 Series |
|---|---|
| Model Types | LMB4-63 (Basic) / LMB4-63W (WIFI) / LMB4-63R (RS485 Modbus) |
| Measuring System | Single-phase AC 2-wire (L+N) |
| Working Voltage Range | AC 85V ~ 265V 50Hz |
| Rated Measuring Current | 0~100A built-in CT |
| Measurement Precision | Voltage/Current ±0.5%; Power/Energy ±1% |
| Display | Colorful LCD digital screen |
| Control Output | Built-in relay, max load switch current 100A |
| Communication Interface | Basic: None; WIFI: 2.4G WIFI; RS485: Modbus-RTU |
| Mounting | Standard 35mm DIN rail (1 module width) |
| Housing Material | Flame-retardant ABS plastic |
| Protection Functions | Overvoltage / Undervoltage / Overcurrent / Over-temperature auto cut-off |
| External Interface | NTC temperature sensor port |
5. Typical Applications
- Household main circuit power monitoring & overload protection
- Solar off-grid / grid-tied PV system energy statistics
- Small industrial machine equipment power monitoring
- Rental room electricity metering and remote power management
- Intelligent building, smart home electrical control cabinet
- Factory workshop centralized energy monitoring system
- Charging pile small power distribution monitoring
6. Frequently Asked Questions (FAQ)
1. What’s the core difference between the three LMB4-63 models?
- LMB4-63 Standard: Only local button operation, no remote communication, cost-effective for basic monitoring
- LMB4-63W WIFI: Mobile APP remote view, remote switch control, alarm push and cloud data storage for smart home/rental houses
- LMB4-63R RS485: Industrial Modbus communication, can connect multiple meters to PLC/industrial host for centralized data collection
2. Does this meter support overload automatic power off?
Yes. All three versions support customizable overvoltage, undervoltage, overcurrent and over-temperature thresholds. When the measured value exceeds your preset limit, the internal relay will cut off the load circuit automatically for safety protection.
3. Can the WIFI version work without a router?
No. The LMB4-63W needs 2.4GHz WIFI router connection to upload data to mobile APP and cloud. It does not support 5G WIFI signal.
4. What protocol does the RS485 version use?
LMB4-63R adopts standard Modbus-RTU industrial protocol, compatible with most PLC, touch screen and industrial energy monitoring hosts, supporting multi-meters bus networking.
5. Is this energy meter legal for commercial billing?
This device is a multifunction power monitoring meter for load protection and energy statistics, not certified as legal trade metering meter for official electricity billing. It is recommended for internal power consumption monitoring only.
6. Can I install multiple meters in one distribution box?
Yes. It adopts standard 1-module DIN rail size, you can install several LMB4-63 series meters side by side on 35mm DIN rail without occupying extra cabinet space.
7. Technical documentation and support
Download the full datasheet for detailed specifications, wiring diagrams and trip coordination guides.
Please contact our technical team for custom configuration or OEM/ODM solutions for your project.
Request a quote with details about your project for volume pricing, lead times, and compliance certifications.
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