Your cart is empty.
Your cart is empty.Product Description
Accurate under any light source.
SpotOn Quantum PAR Meter
Designed by Innoquest president and licensed engineer Bill Hughes, who has created over 75 agricultural and greenhouse products, 17 of which have won AE-50 awards from the American Society of Agricultural and Biological Engineers.
Trust SpotOn to deliver accuracy
SpotOn Stacks Up Well Against The Competition
Our meter is trusted by researchers and scientists for PPFD measurements under all types of lighting. From LED to sunlight the SpotOn is an excellent choice.
Easy to use and read with a .75" LCD display
Bill Hewes, Inventor of SpotOn
Bill Hughes, inventor and President of Innoquest.
Meters for the rest of us
You don't have to break the bank to acquire a quality par meter; affordable models can be just as effective.
Feature packed multi-tool
Cleverly designed with an integrated stand that converts to a garden stake for stationary DLI readings.
Pride of ownership
The SpotOn is easy to hold and read with it's half inch high LCD screen.
Daily Light Integral Built In
Compare PAR levels to anywhere on earth
Daily Light Integral is the amount of light that a plant gets in a 24 hour day. In nature, the amount of light varies all day long. DLI measures the total so you can compare it to anywhere on earth.
Simply set the SpotOn down for 24 hours
When you return DLI is displayed when the power button is pressed. Use this reading to match up to any environment on earth using a wide variety online DLI lookup tables.
s.schultz
2025-09-04 13:55:25
Works great. Should have come with the extension.
C man
2025-08-21 10:28:56
So small and accurate love this tool
Robert Benden
2025-08-15 11:44:22
I love the product but the packaging was terrible. When you spend $400 on a piece of electronics it does it need to be in a box 10 times bigger than it needs to be with no support not even cheap ass styrofoam peanuts
TraderGamer
2025-07-10 17:08:41
This is a nice little tool. Built solid, looks pro. Comes with a nice little padded case. One button press simplicity. No BS a true Quantum Meter, works beautifully with my LEDs.
Michael J. Hawkes
2025-06-28 21:00:58
Great produce and easy to use. Only a minute to setup and begin using.
Zack
2025-06-15 18:49:13
Perfect little par meter. Works great.
Marcus Hayden
2025-04-26 17:54:22
Really helped with indoor garden.
Y.O.A.
2025-04-15 12:37:30
This is a super expensive light meter that I was encouraged to buy for an indoor plant class. Not only was it not worth the high price, but I still can't get it to read DLI after referring to the manual, the YouTube video, and asking my professor for help. It has TWO BUTTONS. It should NOT BE HARD TO USE. I contacted the manufacturer who just resent me the manual I already can download from Amazon. I do not recommend this and will attempting to return (I threw away the box) or give to a classmate. A huge waste of money and effort.
JPDeG
2025-01-07 09:18:46
If you are going to grow plants indoors you need to illuminate them with wavelengths of light that plants absorb (PAR). A cheap light meter will not tell you how much PAR your light source is providing. It will only give you a sum of all the visible light. A proper PAR meter can cost thousands of dollars. This one provides the basics and is probably the least expensive PAR meter that actually works.
James
2024-12-16 17:19:36
Happy with product
Recommended Products
$132.80
$ 61 .99 $61.99