This is a great professional light meter that can be used by nurseries, for hydroponics, hobby and professional orchid growers, or for everybody who installs lighting or needs to check and audit light levels. It is very sensitive and has very high resolution in the low range from 0-40 lux, it measures in 0.01 steps. And it also has the highest upper range, up to 400,000 lux, therefore it can measure intense bright light and direct sunlight.

If you are looking for the best light meter, this is the unit for you.

You can find information about orchid light needs here.

Features:

• Unit Lux or Footcandle (fc) selectable

  Multifunctional LCD, 3 3/4 digits and 42 segment bargraph

  Auto Zero

  Min/Max Memory

  Over-range indication

  Data Hold

  Relative Readings (compare location 1 to location 2)

• Low power consumption, automatic power-off after 30 min

Specifications:

• Ranges: 0-40 / 400 / 4,000 / 40,000 / 399,900 Lux

                 0-40 / 400 / 4,000 / 39,990 fc

  Resolution: up to 0.01 lux  

  Accuracy: ±5% 

  Repeatability: ±3%

  Photo detector type: Silicon Photo Diode with Filter

  Operating temperature: 32-104 degrees F (0-40 degrees C)

  High Sampling rate: 13.3 times per second

  Dimensions: 7" X 3" X 1.5"

• Photo Detector Dimensions: 4.5" X 2 " X 0.8"

What's in the box:

• Luxmeter

  Black Carrying case

  9V battery

• User manual

Price: US$ 79.99 and free shipping in the USA

Minnesota Residents add 7.625% SalesTax

Will ship worldwide! If you are outside the US, contact me for shipping cost!