No native smartphone app exists for direct USB connection. However, by pairing the PZEM-017 with a (e.g., HC-05) or an ESP32 Wi-Fi bridge , you can use generic Modbus RTU apps:
No "software download" needed; use the PZEM-017 component integration. pzem-017 software download
| Software | Purpose | Platform | |----------|---------|----------| | | Read registers, test communication | Windows | | PZEM Utility (by Peacefair) | Official config tool (address, baud rate) | Windows | | QModMaster | Free Modbus master | Windows/Linux | | Serial Monitor (Arduino IDE) | Raw data debugging | Cross-platform | No native smartphone app exists for direct USB connection