Use this analogue UV sensor module extends to extend your light sensing spectrum. Its UV photodiode will detect light ranging from 240-370 nm (thus including UVB and most of the UVA spectrum). As the photodiode has a very small nano-ampere signal level, the device contains an opamp to amplify this signal.
Specifications:

1. operating voltage: 3.3 V to 5 V
2. output voltage: 0 V to 1 V (0-10 UV index)
3. response time: 0.5 second
4. accuracy: +/- 1 UV index
5. radiation wavelength: 240-370 nm
6. operating temperature: -20 °C to +85 °C
7. current consumption: 5 mA
8. dimensions: 24 x 15 mm

vma328_a4v01.pdf

guvas12sd_datasheet.pdf

vma328_scheme.pdf

vma328_example2.zip

vma328_code.zip

wpse328_uv_sensor.zip

ce_rohs_open.pdf