Huawei SA4H-A02 SmartAssistant Walter Werke The Marstek CT003 is a

The Marstek CT003 is a compact smart meter that easily connects to your smart energy meter via P1 or infrared

ADR product

Fault simulation: CP fault “E”

When the Energy Display does not detect any movement for a while

Huawei SA4H-A02 SmartAssistant Walter Werke The Marstek CT003 is aHuawei SmartAssistant SA4H A02 02314JES 005 (successor to EMMA A02). Please note, RS485 is almost always required; check compatibility with your inverter. This is the successor to the EMMA A02 module. Both technically and functionally, the SA4H A02 remains unchanged from the previous EMMA system (mid 2026). The Huawei SA4H A02 is a Residential Smart Energy Management Assistant, offering an advanced solution for measuring, monitoring, and optimizing