	S2-111-SS.	S2-112-SS	S2-411-SS	S2-412-SS
Power Supply	Self-powered	Self-powered	5.5 to 24 V DC	5.5 to 24 V DC
Output (sensitivity)	5 mV per W m^-2(Red) 6.67 mV per W m^-2(NIR)	10 mV per W m^-2(Red) 20 mV per W m^-2(NIR)	-	-
Calibration Factor (recipricol of sensitivity)	0.2 W m^-2(Red) 0.15 W m^-2(NIR)	0.1 W m^-2(Red) 0.05 W m^-2(NIR)	Custom for each sensor and stored in firmware	Custom for each sensor and stored in firmware
Calibration Uncertainty	± 10 %	± 10 %	± 10 %	± 10 %
Output Range	20 mV (Red) 30 mV (NIR)	10 mV (Red) 10 mV (NIR)	SDI-12	SDI-12
Wavelength Ranges	Red detector = 650 nm with 10 nm FWHM* ± 3 nm NIR detector = 810 nm with 10 nm FWHM* ± 3 nm	Red detector = 650 nm with 10 nm FWHM* ± 3 nm NIR detector = 810 nm with 10 nm FWHM* ± 3 nm	Red detector = 650 nm with 10 nm FWHM* ± 3 nm NIR detector = 810 nm with 10 nm FWHM* ± 3 nm	Red detector = 650 nm with 10 nm FWHM* ± 3 nm NIR detector = 810 nm with 10 nm FWHM* ± 3 nm
测量范围	2x full sunlight	2x full sunlight	2x full sunlight	2x full sunlight
Measurement Repeatability	Less than 1 %	Less than 1 %	Less than 1 %	Less than 1 %
Long-term Drift	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year	Less than 2 % per year
Response Time	Less than 1 ms	Less than 1 ms	Less than 0.6 s	Less than 0.6 s
视野	180°	35°	180°	35°
定向（余弦）响应	± 2 % at 45°; ± 5 % at 75° zenith angle	± 2 % at 45°; ± 5 % at 75° zenith angle	± 2 % at 45°; ± 5 % at 75° zenith angle	± 2 % at 45°; ± 5 % at 75° zenith angle
Temperature Response	Less than 0.1 % per C	Less than 0.1 % per C	Less than 0.1 % per C	Less than 0.1 % per C
Housing	阳极氧化铝机身用丙烯酸漫射器	Anodized aluminum body with acrylic window	阳极氧化铝机身用丙烯酸漫射器	Anodized aluminum body with acrylic window
IP Rating	IP68	IP68	IP68	IP68
Operating Environment	-40 to 70 C; 0 to 100 % relative humidity	-40 to 70 C; 0 to 100 % relative humidity	-40 to 70 C; 0 to 100 % relative humidity	-40 to 70 C; 0 to 100 % relative humidity
Dimensions	30.5 mm diameter, 37 mm height	23.5 mm diameter, 43 mm height	30.5 mm diameter, 37 mm height	23.5 mm diameter, 43 mm height
电缆的质量(5米)	140克	110 g	140克	110 g
电缆	5 m of shielded, twisted-pair wire with TPR jacket and stainless steel connector	5 m of shielded, twisted-pair wire with TPR jacket and stainless steel connector	5 m of shielded, twisted-pair wire with TPR jacket and stainless steel connector	5 m of shielded, twisted-pair wire with TPR jacket and stainless steel connector
Warranty	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship

S2-111-SS.

S2-112-SS

S2-411-SS

S2-412-SS

Power Supply

Self-powered

5.5 to 24 V DC

Output (sensitivity)

5 mV per W m^-2(Red)
6.67 mV per W m^-2(NIR)

10 mV per W m^-2(Red)
20 mV per W m^-2(NIR)

Calibration Factor (recipricol of sensitivity)

0.2 W m^-2(Red)
0.15 W m^-2(NIR)