Used matrix module for

Check the multimeter for any physical damage, ensure the display is clear and functional, and test its accuracy with known voltage or resistance sources. Additionally, review the specifications to ensure it meets your measurement needs.

Pack the multimeter securely with cushioning materials, and use a sturdy box. Choose a reliable shipping service and consider insuring the package.

Regularly check the battery and replace it as needed. Clean the probes and the device itself to ensure accurate readings. Periodically calibrate the multimeter according to the manufacturer’s recommendations.