Spectrum Technologies 3412 LightScout红/远红测光表 (660 nanometers (red) and 730 nanometers (far red))

Displays: 660nm and 730nm readings

Battery: 9V battery

Accuracy: ±5%. 

Red light is measured at 660nm, 40nm FWHM (±20nm).

Far Red light is measured at 730nm, 30nm FWHM (±15nm).

Meter range: 660 nanometers (red) and 730 nanometers (far red)

Flyer

Manual

Catalog

The LightScout Red/Far Red Meter displays the red/far-red ratio on the LCD screen. Helps plants determine proximity to each other, affecting how tall or full they grow. Displays 660nm and 730nm readings. Includes a soft sided case