SpotOn Quantum PAR Meter measures photosynthetic light on plants.

This precise meter provides scientifically accurate Photosynthetic Active Radiation (PAR) light readings under any light source, including LED.

And with the purchase of the optional wand, you can get even more accurate readings.

Accurate PPFD Light Readings From Any Light Source:

• Full sun to full shade indoors or outdoors.
• Artificial light sources (LED, High Pressure Sodium, Metal Halide, Florescent, Halogen…).

Three Modes Of Operation:

• Instant Spot Measurement mode for PAR light readings.
• Scan mode for quickly averaging PAR over an area.
• DLI mode shows Daily Light Integral on the LCD (no computer needed).

Compares to Apogee Instruments Spectral Reading Range 

Additional Benefits/Features

• Compact and easy to use
• Water and impact resistant
• Integral mounting plate acts as a stand, or can be used as a stake. Also includes lanyard or hanger hole for suspending the meter, and magnet mounts.
• 1/4-20 threaded hole for mounting on tripod or extension wands, selfie sticks.

Includes and sensor cover and soft carry pouch.

Learn more about the SpotOn PAR Meter on our YouTube Channel here:

QUANTUM PAR LIGHT METER SPECS:
Range:

PAR LIGHT: 0.0 to 6,500 μmol m-2 s-1
DLI (Daily Light Integral): 0.0 to 560.0 moles m-2 day-1
Display Resolution:

PAR LIGHT: 0.1 μmol m-2 s-1 from 0.0 to 99.9
1 μmol m-2 s-1 from 100 to 6,500
DLI: 0.1 moles m-2 day-1
Accuracy: +/- 5% (each meter is calibrated to a NIST traceable light sensor on a broad-spectrum light source)

Azimuth Error: +/- 1% over 360°

Daily Light Integral (DLI): Calculated continuously from light readings every 3 minutes

Water Resistant: IP-65 rated for use in rain, irrigation, and condensing environments (do not submerge)

Operating Environment: 32-130°F(0-55°C) with 0-100% RH condensing ok

Battery: CR2032 3v coin cell lithium included (2-year battery life)

Size & Weight: 1.75in(4.5cm)W x 5.75in(14.6cm)L x .85in(1.8cm)D
0.17lb(77g)