Before using this product, please read this instruction manual carefully to ensure optimal performance and longevity.
Before using this product, please read this instruction manual carefully to ensure optimal performance and longevity. This large digital noise level meter can be applied to measure noise levels in various areas such as offices, homes, music rooms, karaoke rooms, and shopping malls.
■ Operating Procedure
Insert the 5V plug, connect the 1A AC/DC adapter, and turn the power rocker switch ON.
In the initial setting, the frequency weighting is set to A (dBA).
Press the "SET" key once to toggle the alarm mode ON/OFF.
Alarm ON: LED lights up, Alarm OFF: LED turns off.
Press and hold the "SET" key for more than 2 seconds to enter the alarm setting mode. After all digital displays blink, press the "SET" key.
Adjust the alarm sound level using the "MAX/MIN/▲" key or the "FAST/SLOW/▼" key, and press and hold the "SET" key for more than 2 seconds to save the value and return to the normal measurement mode.