1. Range: 410, 500, 540, 590 and 650nm available 2.test more than 26 Parameters 3. Quick tester 4. easy to use FeaturesTest fast, and get results immediately;High-automation, self-recording, self-reserving and self-analyzing;Print results via the built-in RS232, connected with PCPortable, dustproof, waterproof, anti-chemical erosion.Technology SpecificationsLight source: LEDWavelength range: ...