Peacefair Pzem051 Manual: Patched

The PZEM-051 is a 4-in-1 DC digital multifunction meter that simultaneously monitors the following electrical parameters: : Operates between 6.5V and 100V DC .

"Check wiring." (Unhelpful)

Because the PZEM-051 uses UART, you cannot simply plug it into Wi-Fi. You need a "bridge." The ESP8266 (like a NodeMCU or Wemos D1 Mini) is the standard choice. peacefair pzem051 manual patched

There is typically one main button (or touch area) on the front. The PZEM-051 is a 4-in-1 DC digital multifunction