APPA manufactures professional test and measurement instruments, including digital multimeters, clamp meters, and component testers for electrical diagnostics.
APPA Technology Corporation is a widely recognized manufacturer of high-quality test and measurement instruments. Specializing in professional-grade tools, the brand offers a comprehensive lineup of devices such as digital multimeters, clamp metres, voltage testers, and component testers.
Known for their durability, accuracy, and compliance with international safety standards (such as CAT III and CAT IV ratings), APPA instruments are designed to meet the rigorous demands of electricians, HVAC technicians, and industrial maintenance professionals. From compact pen-type multimeters to heavy-duty industrial clamp meters, APPA provides reliable solutions for electrical troubleshooting.
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To replace the battery, typically remove the protective holster (if equipped), unscrew and remove the battery cover on the rear case, and replace the old batteries observing the correct polarity indicated in the compartment.
'OL' (Over Load) generally indicates that the measured value exceeds the limit of the selected range. If this occurs, switch to a higher range if using manual ranging.
Yes, most APPA digital multimeters and clamp meters feature an Auto Power Off function that turns the device off after a period of inactivity (commonly 10 to 30 minutes) to conserve battery life.