Temperature: -5 ~ 35 ℃, accuracy 0.002.

Dissolved oxygen (electrode method): 0-200% saturation, accuracy ± 2%.

(Optical method): 0-150% saturation, accuracy ± 5%

Turbidity (Seapoint software adjustment): or 0-500,0-2000 (4) FTU, accuracy ± 2%.

(Turner): 0-3000NTU. Accuracy 0.05.

(OBS3 +): 0-4000NTU, accuracy: 2% or 0.5

PH pH: 0-14p, accuracy ± 0.1

Sampling rate: 1Hz. (Upgradeable 6Hz, 12Hz)

Memory (data volume): 128MB (30 million). (Upgradeable 256MB, 512MB)

Power: built-in 8-cell lithium battery. (Built-in 16-cell lithium battery, underwater cable external power supply)

Shell + pressure: Delrin plastic, 740 meters. (Upgradeable titanium alloy, 6000 meters)