The PZEM-021 is a digital meter designed for measuring and displaying various electrical parameters such as voltage, current, active power, and energy. It features an overload alarm function which alerts the user when the power threshold is exceeded, and a power alarm threshold preset function that allows the user to set the power alarm threshold. Additionally, the meter has a reset function for the energy key, and stores data even when power is off.

The display interface of the PZEM-021 is a large-screen LCD, which shows voltage, current, power, and energy parameters at the same time. The meter also has a backlight function that can be turned on or off with a short press of a key, and the backlight has a memory function that stores the on or off state even when power is off. With its range of features, the PZEM-021 is a useful tool for anyone needing to measure and monitor electrical parameters.

Specifications:

•Working Voltage: 80~260VAC
•Test Voltage: 80~260VAC
•Rated Power: 20A/4500W
•Operating Frequency: 45-65Hz
•Measurement Accuracy: 1.0 grade
•Power Test Range: 0~4.5kW (within 1KW, the display format is 0.0~999.9W; 1KW and above, the display format is 1000~4500W.)
•Energy Test Range: 0~9999kWh (within 10KWh, the display format is 0~9999Wh; 10kWh and above, the display format is 10~9999kWh.)
•Voltage Test Range: 80~260V
•Display Format: 80~260V
•Current Test Range: 0~20A
•Display Format: 0.00~20.00
•Weight: 84g(approx.)