	SS-110	SS-120	PS-100	PS-200	PS-300
Wavelength Range	340 to 820 nm	635 to 1100 nm	350 to 1150 nm	190 to 850 nm	220 to 1100 nm
Irradiance Calibration Range	-	-	350 to 1000 nm	300 to 850 nm	300 to 1000 nm
Wavelength Measurement Internal	1 nm	1 nm	-	-	-
Wavelength Resolution	3 nm (full width half maximum)	3 nm (full width half maximum)	1 nm	0.85 nm	1.5 nm
Detector Type	-	-	CCD, 2048 pixel	CCD, 2048 pixel	CCD, 2048 pixel
Grating Type	-	-	Holographic & Ruled, 600 g/nm	Holographic & aberration-corrected, 590 g/nm	Holographic & aberration-corrected, 590 g/nm
Digitizer	-	-	16-bit	16-bit	16-bit
Wavelength Accuracy	± 0.5 nm	± 0.5 nm	-	-	-
Wavelength Repeatability	± 0.2 nm	± 0.2 nm	-	-	-
Analog to Digital Resolution	14 bit	14 bit	-	-	-
Signal to Noise Ratio	1500:1 (at maximum signal)	1500:1 (at maximum signal)	1000:1	1000:1	1000:1
Stray Light	≤ 0.25 % at 590 nm	≤ 0.25 % at 850 nm	0.1 % at 435 nm, 0.5 % at 600 nm	0.02 % at 435 nm, 0.2 % at 200 nm	0.02 % at 435 nm, 0.2 % at 220 nm
Dark Noise	≤ 3 counts	≤ 3 counts	-	-	-
Integration Time Range	10 ms to 10 s	10 ms to 10 s	1 ms to 65 s	1 ms to 65 s	1 ms to 65 s
Measurement Sensitivity	Greater than 10 % of max sensitivity for wavelengths greater than 380 nm	Greater than 10 % of max sensitivity for wavelengths less than 1030 nm	-	-	-
Measurement Repeatability	Less than 1 % (wavelengths greater than 400 nm)	Less than 1 % (wavelengths less than 1020 nm)	Less than 1 %	Less than 1 %	Less than 1 %
Directional (Cosine) Response	± 5 % at 75 ° zenith angle	± 5 % at 75 ° zenith angle	± 5 % at 80° zenith angle	± 5 % at 80° zenith angle	± 5 % at 80° zenith angle
Fields of View	180 ° (upward-facing); 25 ° or 150 ° (downward-facing)	180 ° (upward-facing); 25 ° or 150 ° (downward-facing)
Temperature Response	-0.1 ± 0.1 % per C	-0.1 ± 0.1 % per C	-	-	-
Irradiance Calibration Uncertainty	± 5 %	± 5 %	± 10 %	± 10 %	± 10 %
Current Draw	190 mA (USB)	190 mA (USB)	-	-	-
Power Requirement	1 Watt (USB)	1 Watt (USB)	100 mA at 5 V DC, supplied via USB code	100 mA at 5 V DC, supplied via USB code	100 mA at 5 V DC, supplied via USB code
Interface Cable	5 m PVC jacket with USB (for computer)	5 m PVC jacket with USB (for computer)	-	-	-
Optical Cable	-	-	2 m armored fiber-optic	2 m armored fiber-optic	2 m armored fiber-optic
Software	Apogee Spectrovision (windows compatible, XP and later; Mac compatible 10.9 and later)	Apogee Spectrovision (windows compatible, XP and later; Mac compatible 10.9 and later)	Windows compatible, included	Windows compatible, included	Windows compatible, included
Operating Environment	-20 to 70 C, 0 to 100 % relative humidity	-20 to 70 C, 0 to 100 % relative humidity	-	-	-
Operating Temperature	-	-	0 to 60 C	0 to 60 C	0 to 60 C
Thread Size (for mounting)	¼"-20	¼"-20	-	-	-
Dimensions	89.3 mm height, 50.8 mm width, 38.1 mm depth	89.3 mm height, 50.8 mm width, 38.1 mm depth	25 mm x 75 mm x 125 mm	69 mm x 100 mm x 150 mm	69 mm x 100 mm x 150 mm
Mass	300 g	300 g	500 g	900 g	900 g

Wavelength Range

340 to 820 nm

635 to 1100 nm

350 to 1150 nm

190 to 850 nm

220 to 1100 nm

Irradiance Calibration Range

350 to 1000 nm

300 to 850 nm

300 to 1000 nm

Wavelength Measurement Internal

1 nm