Welcome to our store! This dual digital display voltage ammeter features embedded installation for flexible and easy setup. Equipped with an HTN LCD screen with a wide viewing angle, it directly displays voltage and current. It supports backlight control, which can be turned on or off with short key presses, making it usable at night. Current non-contact measurement, with a measuring range of AC 0-100A, offers high accuracy, safety, and reliability. Primarily used in high and low voltage power distribution cabinets, showcases, photovoltaic inverters, assembly line testing, electronic maintenance, etc. Item Type: Voltage Meter Material: ABS Model: PZEM-026 Voltage Measurement Range: AC 40-400V Display Format: when <100V, display as: 80.0V; when display ≥100V, display as: 220V Accuracy: ± 1% Current Measurement Range: AC 0-100A Display Format: when <10A, display as 1.00A; when <100A, display such as 10.0A; when ≥100A, display as 100A Starting Current: 0.02A Accuracy: ± 1% Error Adjustment: The product has been 100% calibrated before leaving the factory, and the user can manually adjust the error, as shown below: Step 1: Long press the button (about 3 seconds) until the numbers on the screen start flashing, then release the button Step 2: The flashing number indicates that it has entered the "error adjustment mode", the numbers flash cyclically, the sequence is: high voltage-medium voltage-low voltage-decimal point voltage-high current-medium current-low current- Current decimal; flashing indicates the current adjustable number, short press the button to adjust the integer (number 0-9 cycle, decimal point shift) Step 3: After adjustment, please press and hold the button (about 3 seconds), the screen will display "PASS" and return to the normal interface, indicating that the adjustment is successful 1 x Voltage Meter 1 x Manual Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!