Quantum PAR Meter Full-Spectrum High Precision PPFD Tester for Photosynthetic Activity of Indoor and Outdoor Plants 400-700nm Light Lux Tester

Funktioniert extrem präzise und zeigt mir genau an ob alles stimmt oder nicht, bin sehr glücklich dass ich mich nicht mehr auf das dämliche Handy verlassen muss wo die Werte sowieso kaum stimmen wenn man nicht eine entsprechende teure Kamera hat.

It's not the professional version that you see Hollywood producers carrying. I don't need all that. I just want basic readings from LED lights for plant growth factors. For that it does quite well. I've messed around with it using sunshine as well. It seems pretty accurate. Full mid day summer sun should max it out. It does. Evening sun, even though it seems 'weak' to our eyes, is still magnitudes brighter than most commercial LED plant lights. You can measure it yourself, with this meter. I can't vouch for the exact accuracy but it will certainly give you a proper idea of what you are working with. I used it to dial in my sprout dome and grow tent. Too much light makes the baby go blind, so to speak. Read the charts and figure out how much light is good for your plants.

Very good.

Pratique, fiable et pas trop cher !

Indispensabile per non improvvisare