PAR (Photosynthetically Active Radiation) Meter
PAR (Photosynthetically Active Radiation) Meter with Accessories
PAR (Photosynthetically Active Radiation) Meter 2
PAR (Photosynthetically Active Radiation) Meter with Extension Stick

Sper Scientific


Detachable Full Spectrum PAR (Photosynthetically Active Radiation) Meter

Regular price $199.00 $0.00 Unit price per

Measurement of PAR (Photosynthetically Active Radiation) flux density is crucial for optimizing plant growth in greenhouses and indoor farms, as it provides crucial information on the amount of light energy available for photosynthesis.

By monitoring PAR levels, growers can adjust the lighting intensity, duration, and spectrum to achieve optimal plant growth and yield.

The Sper Detachable Full Spectrum PAR Meter feature a remote sensor that can used in hand or with 36”extension/selfie stick. Remote sensor may also be mounted on tripod with tripod mounting screw.

  • Stable measurement of photosynthetically active radiation (PAR, PPFD Photosynthetic Photon Flux Density)
  • High accuracy PAR measurement for 400 to 700nm under all light sources, including LEDs
  • Includes Meter, Sensor, Cables, extension stick, Instructions, plastic case and 2 (AAA) batteries.


Different plants have varying light requirements, and maintaining appropriate PAR levels is essential for optimal growth and development. Monitoring and adjusting PAR levels through the use of artificial lighting systems or natural sunlight exposure play a crucial role in supporting healthy plant growth, maximizing photosynthetic efficiency, and promoting desirable traits like flowering and fruiting.

Plant Physiology
Detachable Full Spectrum PAR Meter can be used in plant physiology research to study the effects of different light conditions on photosynthesis, growth, and development. It can also be used to quantify the photosynthetic capacity of plants and the efficiency of light absorption.

Environmental Science
Detachable Full Spectrum PAR Meter can be used to measure the PAR flux density in natural ecosystems and to study the effects of climate change, air pollution, and other environmental factors on plant growth and productivity.

8583 AZ Detachable Full Spectrum PAR Meter can be used as a teaching tool in biology and horticulture classes to demonstrate the importance of light in plant growth and to provide hands-on experience in measuring PAR levels.

Model 860054
Spectral Range 400±10nm~700±10nm
Measurement Range 0~4000 μmol/m2/sec
Display Resolution 0 .1 μmol/m2/sec for 0~999 ,
1 μmol/m2/sec for 1000~4000
Accuracy ±5 or ± 5% of reading,
whichever is greater
Repeatability & Non-linearity ±1 μmol/m2/sec
Less than 3% (up to 4000 μmol/m2/sec)
LCD update time 0.5 second
Field of View 180°
Directional (Cosine) Response ± 5 % at 75° zenith angle 
Calibration Uncertainty ±5%
Temperature Response ±0.02% per℃
ZERO Function YES
RESET Function YES
LCD Size 25(H)x40(W)mm
Operating Temp. 0~50℃
Operating RH% Humidity < 80%
Storage Temperature -10~50℃
Storage RH% Humidity <90%, no condensation
Dimension Meter: 115(L)x60(W)x24(H)mm
PAR sensor: 80(L)x45.6(W)x26(H)mm
Cable 12 ft straight RJ11 cable,
4.9 ft coiled Rj11cable
Selfie stick 22 cm storage, 100cm extended
Weight ~115g (w/o battery and cable)
Power Supply/Consumption AAA battery x 2pcs, less than 10mA
Standard Package Meter/PAR sensor/Straight cable/Coiled cable
Selfie stick/Battery/Manual/Hard carry case
Long-term Drift Per Year

Less than 2% Per Year

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