Quantum PAR Meter PPFD Sensor – Photosynthetically Active Radiation Tester – PAR-355

If you're serious about growing plants indoors, you need to know how much usable light your plants are getting.

This PAR meter (model PAR-355) is the tool for the job.

It measures Photosynthetically Active Radiation (PAR) in the 0 to 5000 μmol/m²/sec range, which covers just about any grow light setup.

The display is super precise—down to 0.01 μmol in the low range.

It takes a measurement every second, so you can really dial in your light placement.

The repeatability is ±1 μmol, so you can trust your readings.

It's a digital sensor, just point and shoot (or place the sensor where your plants are).

No brand name, but the specs are solid.

Perfect for hydroponics, greenhouses, or just nerding out over your indoor jungle.