LMGQW WiFi Smart Over Under Voltage Protector 1P+N 63A
LMGQW WiFi Smart Over Under Voltage Protector 1P+N 63A
- Rated voltage: AC 220V (50/60Hz)
- Protection range:
- Overvoltage: typically 240V–280V (adjustable)
- Undervoltage: typically 170V–200V (adjustable)
- Rated current: 16A, 32A, 40A, 63A, 80A, 100A
- Operating delay: 2–60s (adjustable)
- Wireless protocol: WiFi 2.4GHz
- Installation: 35mm standard DIN rail mounting
- Protection class: IP20
- Certifications: CE, RoHS
- Rated voltage: AC 220V (50/60Hz)
- Protection range:
- Overvoltage: typically 240V–280V (adjustable)
- Undervoltage: typically 170V–200V (adjustable)
- Rated current: 16A, 32A, 40A, 63A, 80A, 100A
- Operating delay: 2–60s (adjustable)
- Wireless protocol: WiFi 2.4GHz
- Installation: 35mm standard DIN rail mounting
- Protection class: IP20
- Certifications: CE, RoHS
1. Product Overview
The WiFi smart voltage current leakage protector is an all-in-one IoT power protection and monitoring device, combining digital power parameter measurement, wireless remote control and multi-layer circuit safety protection in a compact single-module DIN rail housing. Designed for single-phase AC 230V low-voltage distribution circuits, it connects to the Tuya Smart mobile application via built-in 2.4G WiFi for cloud data storage and remote operation.
The high-definition color LCD screen simultaneously visualizes 4 core electrical metrics: input voltage, real-time load current, cumulative power consumption (kWh), and residual leakage current. Users can adjust all protection limit values locally via front physical buttons or remotely on mobile phones. It automatically trips to cut power under overvoltage, undervoltage, overload overcurrent or electric leakage faults, preventing wire overheating, equipment burnout and fatal electric shock hazards. Widely applied in smart residences, rental apartment power management, small commercial premises, agricultural machinery and charging auxiliary circuits.
2. Core Product Features
1. Full-Color Multi-Parameter LCD Display
High contrast color digital screen with separated color zones for distinct data reading:
- AC input voltage (blue digits)
- Real-time load working current (yellow digits)
- Cumulative energy consumption kWh (red digits)
- Residual earth leakage current mA (green digits)
Indicator lights separately mark WiFi connection status, impulse power pulse, voltage, current and leakage fault alerts for quick visual troubleshooting.
2. Tuya 2.4G WiFi Wireless Remote Control & Cloud Monitoring
- Quick WiFi pairing with Tuya Smart / Smart Life mobile APP, only supports 2.4GHz WiFi network
- Full remote functions: one-click circuit on/off, real-time data viewing, historical power consumption curve storage
- Instant mobile push notifications for all fault events: overvoltage, undervoltage, overload, leakage, over-temperature
- Custom timing switch schedules, shared device access for multi-user administrator management
- Cloud data permanent storage to track long-term electricity usage statistics
3. 4-in-1 Comprehensive Adjustable Safety Protection
All trip thresholds fully customizable via front SET/UP/DOWN buttons or Tuya APP:
- Overvoltage protection: Auto cut power when grid voltage exceeds user-set upper limit
- Undervoltage protection: Instant trip if mains voltage drops below preset safe value
- Overload overcurrent protection: Thermal delayed tripping to stop cable overheating from long excess load
- Residual earth leakage protection: Fast trip when leakage current exceeds setting to avoid electric shock injuries
4. Intuitive Front Physical Operation Buttons
Four independent blue functional buttons for local on-site configuration without mobile devices:
- SET: Enter parameter setting menu & confirm adjustments
- UP / DOWN: Scroll to adjust voltage, current and leakage threshold values
- Power ON/OFF: Manually switch the circuit load on and off
Simple operation for electricians during installation, debugging and maintenance work.
5. Standard 2P Full L+N Isolation Design
2-pole structure simultaneously disconnects Live (L) and Neutral (N) lines when tripped or switched off, creating a complete visible isolation gap to eliminate residual live-line risks during circuit maintenance. Clear IN (power input) and OUT (load output) terminal embossed marking to avoid reverse wiring errors.
6. Compact DIN Rail Modular Housing
Single standard module width, directly clipped onto universal 35mm DIN rails inside all standard distribution cabinets, saving valuable cabinet layout space. High-temperature flame-retardant insulated engineering plastic housing with anti-electromagnetic interference internal circuit board, stable performance in complex indoor power room environments.
7. Built-in Impulse Pulse Output Function
Impulse signal output terminal supports connection to external pulse counters, convenient for centralized energy data collection in multi-circuit distribution systems.
3. Working Conditions
This WiFi intelligent power protector maintains stable monitoring and protection performance under standard indoor environments:
- Ambient operating temperature: -10℃ ~ +55℃
- Protection Grade: IP20, only installed inside fully enclosed indoor distribution cabinets; not suitable for outdoor splash, high humidity or heavy salt fog environments
- Surrounding atmosphere: Free of corrosive chemical gas, flammable dust and conductive metal particles
- Altitude: Full rated performance below 2000 meters above sea level
- Vibration resistance: Tolerate mild mechanical vibration of indoor power equipment; avoid continuous strong impact
- Humidity: Relative humidity ≤85%, no condensation forming on the device surface
4. Unified Technical Specifications
| Parameter | Unified Specification |
|---|---|
| Model | WiFi Din Rail Smart Voltage Current Leakage Protector |
| Poles | 2P (Live L + Neutral N full disconnection) |
| Rated Operational Voltage | AC 230V 50Hz Single Phase |
| Wireless Communication | 2.4GHz WiFi, compatible with Tuya Smart / Smart Life APP |
| Display | Full-color multi-digit LCD screen (Voltage / Current / kWh / Leakage mA) |
| Protection Functions | Overvoltage, Undervoltage, Overload Overcurrent, Earth Leakage Protection |
| Operation Interface | 4 physical front buttons (SET / UP / DOWN / Power Switch) |
| Extra Function | Impulse pulse output for external energy counting |
| Terminal Marking | IN (Power Input), OUT (Load Output) |
| Mounting Method | Standard 35mm DIN rail modular installation |
| Housing Material | High flame-retardant insulated engineering plastic |
| IoT Features | Remote switch control, fault alarm push, historical power data storage, timing control |
5. Typical Applications
- Household smart home main circuit intelligent monitoring and safety protection
- Rental apartment centralized remote power cut-off management system
- Small retail shops, offices and single-phase commercial distribution boxes
- Agricultural water pumps, ventilation equipment remote control and overload protection
- Low-power charging pile auxiliary circuit leakage and overvoltage monitoring
- Short-term rental housing, hotel room intelligent power consumption control
6. Frequently Asked Questions (FAQ)
1. Does this device support 5GHz WiFi network?
It only supports 2.4GHz WiFi signals; 5GHz WiFi cannot be recognized for pairing. Connect your mobile phone to a 2.4GHz router during the device configuration process.
2. Can I adjust all protection thresholds without a mobile phone?
Yes, all overvoltage, undervoltage, overload and leakage trip limits can be fully set locally using the front SET, UP and DOWN buttons without connecting to the Tuya APP.
3. What data can I view remotely via the Tuya App?
You can check real-time voltage, current, leakage current, instantaneous power and total cumulative kWh energy, plus historical daily/monthly power consumption curves, and receive instant fault alarm notifications.
4. Can multiple mobile phones monitor and control one protector?
You can share device operation permissions with multiple accounts in the Tuya App, allowing several administrators to simultaneously view and remotely control the same unit.
5. Is outdoor installation allowed?
No, the IP20 protection grade is only suitable for sealed indoor distribution cabinets. Outdoor rain, moisture and dust will corrode the WiFi communication module and internal circuit board, causing loss of monitoring and protection functions.
6. What happens when an earth leakage fault occurs?
The device instantly trips to cut off the load power, triggers the local leakage indicator light and sends an alarm push notification to all bound mobile phones; you must troubleshoot the circuit before manually restoring power via the APP or front button.
7. Technical Documentation & Support
Download full datasheets including complete specs, wiring schematics and selection guides.
Reach out to our technical team for project-specific customization and OEM/ODM service.
Submit a project inquiry to receive bulk pricing, production lead times and relevant compliance certificates.
1. Product Overview
The WiFi smart voltage current leakage protector is an all-in-one IoT power protection and monitoring device, combining digital power parameter measurement, wireless remote control and multi-layer circuit safety protection in a compact single-module DIN rail housing. Designed for single-phase AC 230V low-voltage distribution circuits, it connects to the Tuya Smart mobile application via built-in 2.4G WiFi for cloud data storage and remote operation.
The high-definition color LCD screen simultaneously visualizes 4 core electrical metrics: input voltage, real-time load current, cumulative power consumption (kWh), and residual leakage current. Users can adjust all protection limit values locally via front physical buttons or remotely on mobile phones. It automatically trips to cut power under overvoltage, undervoltage, overload overcurrent or electric leakage faults, preventing wire overheating, equipment burnout and fatal electric shock hazards. Widely applied in smart residences, rental apartment power management, small commercial premises, agricultural machinery and charging auxiliary circuits.
2. Core Product Features
1. Full-Color Multi-Parameter LCD Display
High contrast color digital screen with separated color zones for distinct data reading:
- AC input voltage (blue digits)
- Real-time load working current (yellow digits)
- Cumulative energy consumption kWh (red digits)
- Residual earth leakage current mA (green digits)
Indicator lights separately mark WiFi connection status, impulse power pulse, voltage, current and leakage fault alerts for quick visual troubleshooting.
2. Tuya 2.4G WiFi Wireless Remote Control & Cloud Monitoring
- Quick WiFi pairing with Tuya Smart / Smart Life mobile APP, only supports 2.4GHz WiFi network
- Full remote functions: one-click circuit on/off, real-time data viewing, historical power consumption curve storage
- Instant mobile push notifications for all fault events: overvoltage, undervoltage, overload, leakage, over-temperature
- Custom timing switch schedules, shared device access for multi-user administrator management
- Cloud data permanent storage to track long-term electricity usage statistics
3. 4-in-1 Comprehensive Adjustable Safety Protection
All trip thresholds fully customizable via front SET/UP/DOWN buttons or Tuya APP:
- Overvoltage protection: Auto cut power when grid voltage exceeds user-set upper limit
- Undervoltage protection: Instant trip if mains voltage drops below preset safe value
- Overload overcurrent protection: Thermal delayed tripping to stop cable overheating from long excess load
- Residual earth leakage protection: Fast trip when leakage current exceeds setting to avoid electric shock injuries
4. Intuitive Front Physical Operation Buttons
Four independent blue functional buttons for local on-site configuration without mobile devices:
- SET: Enter parameter setting menu & confirm adjustments
- UP / DOWN: Scroll to adjust voltage, current and leakage threshold values
- Power ON/OFF: Manually switch the circuit load on and off
Simple operation for electricians during installation, debugging and maintenance work.
5. Standard 2P Full L+N Isolation Design
2-pole structure simultaneously disconnects Live (L) and Neutral (N) lines when tripped or switched off, creating a complete visible isolation gap to eliminate residual live-line risks during circuit maintenance. Clear IN (power input) and OUT (load output) terminal embossed marking to avoid reverse wiring errors.
6. Compact DIN Rail Modular Housing
Single standard module width, directly clipped onto universal 35mm DIN rails inside all standard distribution cabinets, saving valuable cabinet layout space. High-temperature flame-retardant insulated engineering plastic housing with anti-electromagnetic interference internal circuit board, stable performance in complex indoor power room environments.
7. Built-in Impulse Pulse Output Function
Impulse signal output terminal supports connection to external pulse counters, convenient for centralized energy data collection in multi-circuit distribution systems.
3. Working Conditions
This WiFi intelligent power protector maintains stable monitoring and protection performance under standard indoor environments:
- Ambient operating temperature: -10℃ ~ +55℃
- Protection Grade: IP20, only installed inside fully enclosed indoor distribution cabinets; not suitable for outdoor splash, high humidity or heavy salt fog environments
- Surrounding atmosphere: Free of corrosive chemical gas, flammable dust and conductive metal particles
- Altitude: Full rated performance below 2000 meters above sea level
- Vibration resistance: Tolerate mild mechanical vibration of indoor power equipment; avoid continuous strong impact
- Humidity: Relative humidity ≤85%, no condensation forming on the device surface
4. Unified Technical Specifications
| Parameter | Unified Specification |
|---|---|
| Model | WiFi Din Rail Smart Voltage Current Leakage Protector |
| Poles | 2P (Live L + Neutral N full disconnection) |
| Rated Operational Voltage | AC 230V 50Hz Single Phase |
| Wireless Communication | 2.4GHz WiFi, compatible with Tuya Smart / Smart Life APP |
| Display | Full-color multi-digit LCD screen (Voltage / Current / kWh / Leakage mA) |
| Protection Functions | Overvoltage, Undervoltage, Overload Overcurrent, Earth Leakage Protection |
| Operation Interface | 4 physical front buttons (SET / UP / DOWN / Power Switch) |
| Extra Function | Impulse pulse output for external energy counting |
| Terminal Marking | IN (Power Input), OUT (Load Output) |
| Mounting Method | Standard 35mm DIN rail modular installation |
| Housing Material | High flame-retardant insulated engineering plastic |
| IoT Features | Remote switch control, fault alarm push, historical power data storage, timing control |
5. Typical Applications
- Household smart home main circuit intelligent monitoring and safety protection
- Rental apartment centralized remote power cut-off management system
- Small retail shops, offices and single-phase commercial distribution boxes
- Agricultural water pumps, ventilation equipment remote control and overload protection
- Low-power charging pile auxiliary circuit leakage and overvoltage monitoring
- Short-term rental housing, hotel room intelligent power consumption control
6. Frequently Asked Questions (FAQ)
1. Does this device support 5GHz WiFi network?
It only supports 2.4GHz WiFi signals; 5GHz WiFi cannot be recognized for pairing. Connect your mobile phone to a 2.4GHz router during the device configuration process.
2. Can I adjust all protection thresholds without a mobile phone?
Yes, all overvoltage, undervoltage, overload and leakage trip limits can be fully set locally using the front SET, UP and DOWN buttons without connecting to the Tuya APP.
3. What data can I view remotely via the Tuya App?
You can check real-time voltage, current, leakage current, instantaneous power and total cumulative kWh energy, plus historical daily/monthly power consumption curves, and receive instant fault alarm notifications.
4. Can multiple mobile phones monitor and control one protector?
You can share device operation permissions with multiple accounts in the Tuya App, allowing several administrators to simultaneously view and remotely control the same unit.
5. Is outdoor installation allowed?
No, the IP20 protection grade is only suitable for sealed indoor distribution cabinets. Outdoor rain, moisture and dust will corrode the WiFi communication module and internal circuit board, causing loss of monitoring and protection functions.
6. What happens when an earth leakage fault occurs?
The device instantly trips to cut off the load power, triggers the local leakage indicator light and sends an alarm push notification to all bound mobile phones; you must troubleshoot the circuit before manually restoring power via the APP or front button.
7. Technical Documentation & Support
Download full datasheets including complete specs, wiring schematics and selection guides.
Reach out to our technical team for project-specific customization and OEM/ODM service.
Submit a project inquiry to receive bulk pricing, production lead times and relevant compliance certificates.
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