Choosing the best PAR meter for LED grow lights comes down to more than a long list of features. You want a sensor that covers the light range you need, a display and cable setup that work in your growing space, and readings you can use to compare light levels across your plants. The five options below measure PPFD in the 400–700 nm range; one also includes a Daily Light Integral (DLI) function.
Our top pick is the Elaphodus for its split sensor design and 99-reading memory. If tracking accumulated light is important to you, the VidalKraft is the standout option because it lists both PPFD and DLI logging.
Quick Comparison
| Product | Measurement range | Standout features | Best suited for |
|---|---|---|---|
| Elaphodus PAR Meter | 0–4,000 µmol/m²/s; 400–700 nm | Split sensor, two cables, 99 stored readings | Greenhouses and indoor growing setups |
| DANOPLUS PPFD Meter | Up to 4,000 µmol/m²/s; 400–700 nm | Two cables, 100 stored readings, tripod mount | Flexible sensor positioning and basic logging |
| TEKCOPLUS Quantum PAR Meter | Up to 4,000 µmol/m²/s; 400–700 nm | 100 stored readings, two cables, tripod mount | Indoor gardens, hydroponics, and greenhouses |
| Landtek PPFD Meter | 0–3,999 µmol/m²/s; 400–700 nm | 100 stored readings, data hold, two cables | Users who want a stated repeatability figure |
| VidalKraft Quantum PAR Meter | Up to 4,000 µmol/m²/s; 400–700 nm ±10 nm | DLI function and PPFD/DLI data logging | Growers tracking daily light as well as instant readings |
Our Picks: Best Par Meter For Led Grow Lights reviews
Elaphodus PAR Meter: A Split-Sensor Pick for Flexible Measurements
The Elaphodus is a handheld quantum PAR meter with a separate sensor for measuring PPFD from LED grow lights. Its stated range is 0–4,000 µmol/m²/s across the 400–700 nm PAR band, making it suitable for checking light levels at different points in a growing area.
The split design is useful when you need to hold the display in one hand and place the sensor somewhere else. The package description lists a short coiled cable and a 12-foot straight cable, giving you two options for reaching around a greenhouse or grow space. It can store up to 99 historical measurements, which may help when you want to compare readings over time.
Compared with the other choices here, the Elaphodus emphasizes a remote-sensor setup and a slightly smaller stated memory capacity. The product details do not specify a repeatability figure or DLI function, so shoppers who need either feature should look closely at the Landtek or VidalKraft instead.
Pros:
- Measures PPFD across the 400–700 nm range
- Separate sensor with coiled and 12-foot cable options
- Stores up to 99 readings for later reference
- Designed for greenhouse and indoor growing use
Cons:
- Does not list a DLI function
- Its listed memory capacity is lower than the 100-reading options
Verdict: Choose the Elaphodus if a split sensor, long cable, and saved PPFD readings matter more to you than DLI tracking or a stated repeatability specification.
DANOPLUS PPFD Meter: A Straightforward Option with Tripod Mounting
This DANOPLUS meter measures PPFD up to 4,000 µmol/m²/s in the 400–700 nm wavelength range. It is designed for checking light levels under grow lights and in greenhouse or indoor and outdoor growing spaces.
Its sensor has a 1/4-inch tripod screw mount, which can be handy if you want to keep the sensor in a consistent position while taking readings. The product includes a 4.9-foot coiled cable and a 12-foot straight cable, plus a large LCD screen. It can save up to 100 readings and lists calibration and RCFS functions.
The stated specifications are similar to the TEKCOPLUS model below, including the measurement range, cable lengths, and memory capacity. The supplied details do not explain how the RCFS function works or provide a repeatability figure, so those points may be worth confirming if they are important to your routine.
Pros:
- Measures PPFD up to 4,000 µmol/m²/s
- Includes both coiled and 12-foot straight cables
- Tripod screw mount supports fixed sensor placement
- Stores up to 100 readings
Cons:
- The product details do not explain the RCFS function
- No DLI feature is listed
Verdict: The DANOPLUS is a practical choice if you want a tripod-mountable sensor, two cable options, and on-device measurement history in a general-purpose PPFD meter.
TEKCOPLUS Quantum PAR Meter: A Flexible Meter for Indoor Growing
The TEKCOPLUS is a quantum PAR meter for measuring PPFD from LED grow lights. Its stated measurement range goes up to 4,000 µmol/m²/s, and it measures within the 400–700 nm range. The product is described for use with indoor gardens, hydroponics, and greenhouse setups.
Like the DANOPLUS, this model has a 1/4-inch tripod screw mount and includes a 4.9-foot coiled cable plus a 12-foot straight cable. The meter can store up to 100 readings, and its listed functions include calibration, data recording, and RCFS. Those features give you flexibility for taking readings in different parts of a growing space, though the description does not provide further detail about the calibration process or RCFS.
Its feature set is close to the DANOPLUS, so it is worth comparing the exact listing details before choosing between them. Neither product lists DLI measurement, and the supplied specifications do not give a repeatability figure for the TEKCOPLUS.
Pros:
- Measures PPFD in the 400–700 nm range
- Includes two cables for different sensor positions
- Tripod mount can help with repeatable positioning
- Stores up to 100 readings
Cons:
- No DLI function is listed
- Calibration and RCFS details are limited in the product description
Verdict: Consider the TEKCOPLUS if you want a cable-connected PAR meter with tripod mounting and data logging for an indoor garden or greenhouse.
Landtek PPFD Meter: A Handy Choice with a Stated Repeatability Figure
The Landtek measures PPFD in the 400–700 nm range, with a listed measurement range of 0–3,999 µmol/m²/s. Its product details also state ±1 µmol/m²/s repeatability. Repeatability describes how closely repeated readings can match under the same conditions; it is not the same as a guarantee of overall measurement accuracy.
The remote sensor comes with a 4.9-foot coiled cable and a 12-foot straight cable, and its 1/4-inch screw mount can attach to a tripod or selfie stick. The display offers data hold, a history log, and a battery-strength indicator. It can store up to 100 readings, giving you a way to keep a record while adjusting or comparing light conditions.
Compared with the Elaphodus, the Landtek lists more stored readings and a specific repeatability figure, while both offer a long cable for reaching distant spots. It does not list DLI measurement, so it is focused on instant PPFD checks and saved readings rather than daily light totals.
Pros:
- Lists a 0–3,999 µmol/m²/s measurement range
- States ±1 µmol/m²/s repeatability
- Includes coiled and 12-foot straight cables
- Offers data hold, a history log, and a tripod-mounting option
Cons:
- Does not list a DLI function
- The stated repeatability should not be confused with overall accuracy
Verdict: The Landtek is a good fit if you value a stated repeatability figure, measurement hold, and flexible sensor placement for mapping light around your growing area.
VidalKraft Quantum PAR Meter: The Pick for PPFD and DLI Tracking
The VidalKraft stands out because it lists both PPFD measurement and a DLI function. PPFD gives you a reading of light at a particular moment, while DLI represents the total PAR received over a 24-hour period. That combination can be useful if you want to consider both immediate light intensity and accumulated daily light.
The meter measures up to 4,000 µmol/m²/s and lists a 400–700 nm spectral range with ±10 nm noted in the description. It has a remote sensor with a screw mount, a 5-foot coiled cable, and a 12-foot straight cable. Its data logging can save up to 100 historical PPFD and DLI readings.
Among these five options, the VidalKraft is the only one whose supplied details specifically include DLI. That added function may be unnecessary if you only want to check and compare instant PPFD readings. The description does not state a repeatability figure, and the ±10 nm notation is a spectral-range specification rather than a measurement-accuracy guarantee.
Pros:
- Measures both PPFD and DLI
- Stores up to 100 historical PPFD and DLI readings
- Includes coiled and 12-foot straight cable options
- Lists a remote sensor with a screw mount
Cons:
- DLI features may be more than you need for simple spot checks
- No repeatability figure is listed in the supplied details
Verdict: Choose the VidalKraft if you want a single meter that tracks both moment-to-moment PPFD and accumulated daily light, rather than PPFD alone.
How to Choose a PAR Meter for LED Grow Lights
Check the Measurement Range and Units
These meters report PPFD in micromoles per square meter per second (µmol/m²/s), a measure of the light reaching a surface at a given moment. Compare the listed range with the levels you expect to measure. The products here top out at about 4,000 µmol/m²/s, with the Landtek listing a maximum of 3,999 µmol/m²/s.
Confirm the Wavelength Range
PAR describes light in the 400–700 nm band, and all five products list that range. If your setup uses a particular type of LED or you need a meter for technical work, check the full spectral specifications and any stated tolerance. A listed wavelength range alone does not tell you every detail about how a meter performs with a specific light source.
Decide Whether You Need DLI
A PPFD reading is a snapshot; DLI summarizes the total PAR delivered over a full day. If you only need to compare light levels at different spots, a PPFD-only meter may be enough. If you want daily light totals as well, the VidalKraft is the only product in this group that specifically lists a DLI function and DLI data logging.
Think About Sensor Placement and Cable Length
A separate sensor and a long cable can make it easier to measure at plant height or reach into corners without moving the display. Several models include a 12-foot straight cable, while their coiled cables vary in listed length. A tripod screw mount can help hold the sensor in a consistent position when taking multiple readings.
Consider Data Logging and Other Controls
Stored readings can help you compare different locations or keep track of changes after you adjust a light. The listed memory ranges from 99 readings on the Elaphodus to 100 on the other four meters. Also compare practical controls such as data hold, battery indication, and calibration functions, but check the product details carefully when a feature name is not explained.
Understand Accuracy Claims
Measurement range, repeatability, and accuracy are related but different ideas. A range tells you what values a meter is designed to measure; repeatability describes how closely repeated measurements may agree under the same conditions. The Landtek lists ±1 µmol/m²/s repeatability, but that figure should not be treated as a complete accuracy specification. If precise measurements are essential, look for detailed calibration and accuracy information from the manufacturer.
Match the Meter to Your Growing Space
A compact handheld meter may be enough for a small grow tent, while a greenhouse or larger indoor farm may benefit from a remote sensor, longer cable, data storage, and tripod mounting. Think about how often you will take readings and whether you need to record them. The most feature-packed option is not automatically the best fit if you only need occasional spot checks.
Frequently Asked Questions
What does a PAR meter measure?
These products measure PPFD, or Photosynthetic Photon Flux Density, within the listed PAR wavelength band. PPFD readings describe the amount of light reaching a surface at a particular moment.
Is PPFD the same as DLI?
No. PPFD is an instantaneous reading, while DLI is the total PAR received over a 24-hour period. The VidalKraft product specifically lists both PPFD and DLI measurement functions.
Which meter in this list measures DLI?
The VidalKraft Quantum PAR Meter is the only one in this group whose supplied product details list a DLI function. It can also store historical PPFD and DLI readings.
Why do some PAR meters have a separate sensor?
A remote sensor lets you place the sensing head where you want to measure while keeping the display in hand. Cable length and a tripod mount can make it easier to reach different locations or keep the sensor positioned consistently.
How can I compare light levels across a grow space?
Take readings at a consistent height and orientation across several spots, keeping the light setup and measurement conditions the same. Comparing points across the area can help you identify uneven light distribution. Follow the meter’s instructions for sensor placement and operation.
Does a higher maximum measurement range mean a more accurate meter?
No. The maximum range tells you the highest reading the meter is specified to measure. It does not, by itself, show how accurate or repeatable the readings are. Look for separate accuracy or repeatability specifications if those details matter to you.
Which PAR meter is the best overall choice?
The Elaphodus offers a useful balance of a remote sensor, two cable options, and stored readings. If DLI tracking is a priority, the VidalKraft is the more suitable choice based on the features listed for these products.
Final Recommendation
For a flexible all-around option, the Elaphodus PAR Meter is a strong place to start, thanks to its split sensor design, 12-foot cable, and 99-reading memory. Choose the VidalKraft instead if you want DLI measurement and logging alongside PPFD. For a stated repeatability figure, consider the Landtek, while the DANOPLUS and TEKCOPLUS offer similar feature sets with tripod mounts and two cable options. Match your choice to the readings and workflow you actually need.