Note: The PZEM-051 is less common than the PZEM-061; it is typically a variant designed for (non-CT, shunt-based) or an RS485 model. The following is compiled from standard Peacefair documentation for the 50A/100A direct version.
Long-press the key until "" appears in the power display area, then release. peacefair pzem-051 manual
The PZEM-051 usually has one or two tactile buttons: Note: The PZEM-051 is less common than the
Connect the positive (+) and negative (-) terminals of your battery or power source to the voltage measurement terminals on the back of the meter. peacefair pzem-051 manual
Short-press the key once while the energy value is flashing to clear it.
: Generally stays within 1% of professional multimeters.