ZOYI manufactures professional electrical testing instruments, including digital multimeters, LCR meters, clamp meters, and smart soldering irons.
ZOYI is a leading brand in the field of electronic test and measurement instruments, manufactured by ZOTEK Instruments. Known for their extensive range of high-performance yet affordable tools, ZOYI produces digital multimeters, clamp metri, vol.tage detectors, and portable oscilloscopes.
The brand is recognized for its user-friendly designs, including the popular ZT series of multimeters and smart soldering irons. Whether for professional industrial use or hobbyist electronics projects, ZOYI provides reliable diagnostic solutions that emphasize safety, accuracy, and innovation.
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'OL' stands for Over Limit or Over Load. It indicates that the measured value exceeds the currently selected range. If you are in manual ranging mode, switch to a higher range.
Turn off the device and remove all test leads. Loosen the identifying screw on the battery cover or back case, remove the old batteries, and install new ones (typically AAA or 9V) observing the correct polarity labeled inside the compartment.
Turn the rotary switch to the NCV position. Hold the top of the meter near the AC voltage source (such as a socket or wire). The meter will beep and the indicator light will flash if voltage is detected; the frequency of the beep usually increases with signal strength.
Check the batteries to ensure they are fresh and installed correctly. If the device has an auto-power-off feature, press the 'SELECT' or power button to wake it up.
For models like the ZT-N2, measure the actual tip temperature with an external thermometer. Enter the device's calibration menu and adjust the displayed temperature until it matches your external reading.