QT-SQ200 PAR Data Logger


The five photosynthetic reactions of plants, including photosynthesis, pigment synthesis, photoperiodicity, phototaxis and morphological mutation, all happen in the wavelength range of 400~700nm. Thus the wavelength in 400 ~ 700nm of radiation is called Photosynthetically Active Radiation (PAR), its symbol is Qp and its unit is W/m2. PAR is the energy source of the plant life activities, organic matter synthesis and yield formation.

QT-SQ200 PAR Data Logger


  • GPS coordination can be recorded
  • Record data Automatically or manually
  • Wireless data transmission via Wi-Fi
  • Recognize sensors by two-dimensional code
  • Automatically recognize connected sensors
  • Terminal memory card is up to 32G
  • Display real-time data and curve of recorded data
  • Export data to Excel for analysis

Technical parameters


Technical parameters

Absolute accuracy







Measurement of photon flux

2.5V output

Output:0~2.5V(2.0V=2000μmol m-2 s-1)

Power supply:2.5~5.5VDC

Sensitivity:1.00μmol m-2 s-1 / mV

Current consumption


Operating environment

- 40 to 55 °C; 0 to 100% RH

Cable length

3 m of shielded cable

Android devices




Operating system

Android 4.2





Extended memory

Memory up to 32G

Screen Size

5.0 In.

Screen Resolution

960 * 540

Operation Mode

Touch screen

Screen color support

16 million colors

Origin: CHINA

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