ADL200W / ADL400W: Intelligent Anti-Backflow Monitoring Terminal for Residential PV and Energy Storage Systems

24 12, 2025

With the rapid adoption of balcony photovoltaic systems and residential photovoltaic energy storage solutions, ensuring safe operation and achieving “self-consumption without power export” has become a key requirement for end users and system integrators. The ADL200W and ADL400W intelligent monitoring and control terminals are specifically designed for these scenarios, providing accurate measurement and fast control to ensure photovoltaic power flows only into local loads and never back to the grid.

Designed for Residential PV and Energy Storage Applications

ADL200W / ADL400W are tailored for balcony PV systems, residential PV installations, and small-scale energy storage applications operating in low-voltage distribution environments. Their primary function is to prevent reverse power flow, helping users comply with grid regulations while maximizing local energy consumption. This enables true self-generation and self-use, improving overall system efficiency and economic performance.

Dual-Channel Measurement for Accurate Power Flow Control

The devices feature a dual-circuit design, allowing simultaneous and independent monitoring of photovoltaic generation and household electricity consumption. By calculating net power in real time, the system can accurately determine power flow direction and quickly respond to anti-backflow control requirements.
ADL200W / ADL400W support both single-phase and three-phase systems, offering strong compatibility with various residential electrical configurations.

Built-in Wireless Communication and Multi-Protocol Support

To simplify system integration, the terminals are equipped with built-in Wi-Fi and LoRa wireless communication modules, eliminating the need for additional wiring. This allows seamless real-time communication with inverters, energy storage systems, or energy management systems (EMS).
In addition, the devices support Modbus-TCP, HTTP, and other standard communication protocols, making them easy to integrate into smart home platforms or photovoltaic monitoring systems.

Fast Response and Reliable Measurement Accuracy

Performance and accuracy are key strengths of the ADL200W / ADL400W. Electrical parameters are updated every 50 milliseconds, enabling real-time detection of power flow changes and immediate activation of anti-backflow control actions.
Measurement accuracy reaches 0.5% for voltage and current and 1% for power, ensuring reliable data for system control, energy analysis, and long-term operation.

Easy Installation and Intelligent Commissioning

The terminals adopt a DIN-rail mounting design with a compact form factor, making them ideal for installation inside residential distribution boxes.
They also support automatic wiring diagnosis and phase sequence correction. Even if wiring errors occur during installation, the device can automatically identify and adjust the configuration, significantly reducing installation complexity and commissioning time.

Safe, Durable, and Environmentally Adaptable

ADL200W / ADL400W comply with CAT III installation category requirements and offer strong electromagnetic compatibility and insulation performance.
With a wide operating temperature range of –40°C to +70°C, they are suitable for most indoor installations and protected environments, ensuring stable operation under diverse climatic conditions.

Typical Application Scenarios

These intelligent monitoring terminals are widely used in various distributed energy systems, including:

• Balcony PV systems: Real-time monitoring of generation and consumption to prevent power export to the grid.
• Integrated PV and energy storage systems: Coordinated control of PV generation, batteries, and loads to optimize household energy usage.
• Multi-inverter hybrid systems: Centralized monitoring of multiple generation units to ensure stable and efficient system operation.

With dual-channel measurement, fast response capability, high measurement accuracy, and user-friendly installation, ADL200W / ADL400W provide a reliable and intelligent anti-backflow solution for residential photovoltaic and energy storage systems. They help users meet regulatory requirements while maximizing self-consumption, making them an essential component in modern residential distributed energy applications.

For more information or inquiries, please contact: +86 17269573955