2-in-1, with two dials that can display brightness and temperature.High precision sensor, quick test in 04 seconds.Small size, easy to carry.No battery required.Pointer light meter, thermometerLight measurement range: 0-250,000LUXTemperature measurement range: -20-50℃ -10-130℉Resolution: 1uW/cm², 0.01mW/cm²Accuracy Light: -/+10% -/+5%Sampling time 0.4 seconds.Application range: working environment (lamp light intensity), plant light, ambient temperatureWorking environment: -20-50℃7.Scope of application: work environment (Luminaire illumination intensity),Plant illumination, amblent temperature.This product does not require batteries.Illuminance:Optimal value: 200,000 lux-300,000 lux(In this range, the light is not glaring and bright, so bright that your mood is also sunny)Temperature:Optimal value: 23 degrees-28 degrees(Scientifically proven to be the most suitable and comfortable temperature for the human body)Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect UseColour:Photo ColorMaterial:plasticPackage Contents:1 x 2 in 1 Light Meter portable ThermometerOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.