Measuring mode
2 wavelengths optical density difference
Sensor
Silicon semiconductor photodiode
Display mode
LCD, 4 decimal places, tendency chart
Measuring range
-9.9 to 199.9 SPAD units
Memory capacity
30datum, automatically calculate and display average value
Power
2 AA batteries (1.5V)
Accuracy
Within ±1.0 SPAD units
Repeatability
Within ±0.3 SPAD units