The single-phase rail-mounted Smart WIFI Switch is a product that meets users' needs for circuit protection and control. The product features functions such as metering, timing, fault protection, remote control, and local control
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The LRA1 Smart WIFI Switch is a single-phase DIN-rail mounted intelligent circuit control device, purpose-built to meet the rigorous demands of circuit protection, energy management, and intelligent control for commercial lighting systems and electrical distribution projects. Designed for system integrators, facility management teams, engineering contractors, and commercial operators, this WIFI commercial lighting control switch integrates high-precision metering, multi-mode control, comprehensive fault protection, and unlimited-distance remote operation into a compact, project-ready form factor. Compatible with mainstream smart control platforms, it delivers a cost-effective, scalable solution to upgrade traditional electrical systems into smart, manageable networks for diverse commercial and industrial projects.
This DIN-rail smart WIFI circuit breaker supports both local manual operation and cloud-based remote control, with no distance limitations for on/off switching. Ideal for multi-site commercial projects, it enables centralized management of dispersed facilities via a single platform, eliminating the need for on-site manual operation and drastically reducing maintenance labor costs for facility management teams.
Engineered for project-specific safety requirements, the Tuya APP compatible smart switch supports fully customizable protection parameters for overvoltage, undervoltage, overcurrent, and overpower events, with adjustable trigger and recovery times to match different load types. It also features Class 1.0 high-precision metering for voltage, current, active power, and total active energy, providing actionable energy consumption data to help commercial operators optimize usage and reduce utility expenses.
With standard DIN-rail mounting, the switch fits seamlessly into existing electrical distribution cabinets, requiring no major wiring overhauls for retrofitting projects. It is fully compatible with the Tuya Smart APP, the industry’s most widely used smart control platform, enabling quick pairing, bulk device management, and flexible automation rule setting for large-scale commercial and industrial deployments.
Parameter Category | Core Specifications |
Reference Voltage | 220V、230V |
Rated Operating Voltage Range | 90%Un~110%Un |
Extended Operating Voltage Range | 80%Un~115%Un |
Current Specification | 6-63A |
Frequency Range | 50-60Hz |
Power Consumption | Voltage circuit: 1.5W丶6VA |
Communication Protocol | Tuya WIFI |
Operating Temperature | -20°C ~ 70°C |
Operating Humidity | ≤95% |
Ingress Protection Rating | IP20 |
Product Dimensions | 91.3mm×36mm×66.5mm |
Metering Metrics | Voltage, Current, Active Power, Total Active Energy |
Display | LED Indicator |
Measurement Accuracy | Voltage/Current: Class 2.0 (Class 1.0 with energy metering); Active Power: Class 2.0 |
Core Protection Functions | Overvoltage, Undervoltage, Overcurrent, Overpower Protection |
This commercial building energy management switch is tailored for professional operators across multiple sectors, with core application scenarios including:
Commercial & Office Facilities: For shopping malls, office buildings, chain stores, and hotels, it enables timed/remote control of public area lighting, billboards, and HVAC systems, with time-sharing and zoning management to eliminate energy waste, plus one-click full shutdown for conference rooms and emergency power-off for safety events.
Industrial & Agricultural Operations: For factories, farms, and greenhouses, it delivers remote control of water pumps, fans, and production equipment, with automated on/off scheduling based on operational processes, and emergency shutdown capabilities to protect critical assets. It also supports smart municipal management of street lights, drainage pumps, and river gates.
Residential & Multi-Dwelling Projects: For apartments, rental housing, and villas, it provides smart home appliance control, lighting automation, and security linkage, with remote power shutoff and overload protection to enhance resident safety, plus energy consumption monitoring for property management teams.
Designed for fast on-site deployment by engineering teams, the Tuya smart switch pairing process follows 7 streamlined steps:
Download and install the Tuya Smart APP, then register and log in with your project management account.
Complete wiring per the official diagram: connect upper terminals to the power supply and lower terminals to the load, then power on the device and wait for the LED indicator to activate.
10 seconds after power-on, press and hold the pairing button until the WIFI indicator flashes, confirming pairing mode activation.
In the Tuya APP, click the "+" icon in the top right corner to enter the device addition interface, and wait for automatic device detection.
Select the 2.4G WIFI network (5G networks are not supported), enter the password, and click "Next".
Wait for the device pairing and network connection process to complete.
Select the device category, set a project-specific label, and click "Finish" to complete deployment.
Yes. The customizable overvoltage protection switch supports full customization of protection values, trigger times, and recovery times for overvoltage, undervoltage, overcurrent, and overpower events, making it adaptable to diverse load types across commercial, industrial, and residential projects.
First, confirm the device is powered on correctly and the WIFI network is 2.4G (5G networks are incompatible). Second, ensure the device is in pairing mode (indicator light flashing). For bulk deployment, we recommend using the Tuya APP’s batch pairing function to improve efficiency, and checking that the network signal is stable at the installation site.

