Function description:

Switch machine key: switch machine function.

MODE key: press short to switch measurement unit Lux/fc. long press to switch measurement MODE, which is divided into current MODE/MAX maximum measurement/MIN minimum measurement.
HOLD key: press the button for the lock screen function, press the button for long to switch the range of the loop, and then jump back to the automatic mode after the loop ends:
200 - & gt; 2000 - & gt; 20000 - & gt; 200000.
Automatic shutdown function: this instrument has the function of automatic shutdown, the button does not operate within 15 minutes, the instrument will automatically cut off the power to save the battery loss.

Maintenance and maintenance: when the instrument is not used, it should be stored in a dust-free/shady dry environment. If it is not used for a long time, please take out the battery to avoid battery leakage and damage the instrument.
Battery replacement: when the indicator of low battery voltage is displayed on the instrument screen, it indicates that the battery is nearly exhausted, and a new battery should be replaced immediately:
1. Remove the battery cover from the back of the instrument.
2. Replace with a new 9V battery.
3. Cover the battery.

Product specification:

Illumination measurement of large LCD display
Measurement range: 0.1~200,000Lux, 0.01~20,000Fc
Resolution: 0.1lux / 0.01fc
Measurement accuracy: ±4%
Sampling frequency: 2 times/second
Unit: Lux: Lux, Fc: foot candle
Lock screen function (Hold), maximum/minimum value measurement
Automatic range AUTO, and manual range switching
Automatic shutdown function (no operation for 15 minutes)
The meter will automatically detect the battery power. Please replace the battery in time when the low battery symbol is displayed.
Product size: 145 X 67 X 32m, product weight: 170g
It's powered by a 9V battery

Working environment: 14 to 122℉ (-10 to 50℃), 10%~90%RH

Storage environment: 14 to 131℉ (-10 to 55℃), 10%~95%RH