• Measuring range: 0 μmol m^-2 s^-1 – 50,000 μmol m^-2 s^-1 (+/- 5%) in 2 ranges (0 μmol m^-2 s^-1 – 5,000 μmol m^-2 s^-1 & 0 – 50,000 μmol m^-2 s^-1) in 400nm – 700nm band
• Resolution:
  • 1 µmol m^-2 s^-1 at 0 µmol m^-2 s^-1 – 5,000 µmol m^-2 s^-1
  • 10 μmol m^-2 s^-1 at 5,001 µmol m^-2 s^-1 – 50,000 µmol m^-2 s^-1
• PAR sensor: Silicon photodiode and optical filter with white acetal diffuser
• Temperature sensor: RT curve-matched bead thermistor. 0°C – 50°C/32°F – 122°F (0.02°C resolution)
• Signal display: Hand-held display unit. 16 x 2 LCD display. 0V – 5V analogue output of PAR/temperature values
• Power requirements: 4 x 1.5V AA (LR6) cells. Typically 100 hours battery life
• Dimensions:
  • Display: 146mm x 92mm x 32mm. Weight 300g
  • QTP1+: 9.5mm x 107mm. Weight 50g