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CJMCU-GUVA-S12SD UV light intensity Sensor Module Ultraviolet Light Sensor Breakout Analog Output - 240-370nm
Product description: Extend your light-sensing spectrum with this analog UV sensor module. It uses a UV photodiode, which can detect the 240-370nm range of light (which covers UVB and most of UVA spectrum). The signal level from the photodiode is very small, in the nano-ampere level, so we tossed on an opamp to amplify the signal to a more manageable volt-level.
This sensor outputs analog voltage instead of requiring a complicated I2C setup procedure. This makes it better for simple projects. It also has a 'true' UV sensor instead of a calibrated light-sensor. To use, power the sensor and op-amp by connecting V+ to 2.7-5.5VDC and GND to power ground. Then read the analog signal from the OUT pin. The output voltage is: Vo = 4.3 * Diode-Current-in-uA. So if the photocurrent is 1uA (9 mW/cm^2), the output voltage is 4.3V. You can also convert the voltage to UV Index by dividing the output voltage by 0.1V. So if the output voltage is 0.5V, the UV Index is about 5.
Please note, most of UV LEDs are 400nm, outside the range of this sensor, so if you're trying to test this sensor, don't use them. A UV tanning lamp or 'lizard lamp will work much better or check the UV LED emission wavelength to be in range 240-370nm
Specification: 1. UV Sensor IC: ML8511; Photodiode sensitive to UV-A and UV-B in range 240nm-370nm 2. Embedded operational amplifier; Analog voltage output; Large angle: 130 degrees 3. Low power consumption: Supply voltage 2.5V ~ 5V, operating current is microampere level 4. Gallium Nitride Based Material; Schottky-type Photodiode; Photovoltaic Mode Operation 5. Good Visible Blindness; High Responsivity & Low Dark Current; UV Index Monitoring; UV-A Lamp Monitoring ; Forward Current If 1 mA; Reverse Voltage Vr 5 V 6. Operating Temperature Top -30 … +85 °C; Storage Temperature Tst -40 +90 °C; Soldering Temperature Tsol 260 °C ; Size: 11mm × 27mm