ambient light sensor board SR-2902 (Light sensor, PWM, UART, I2C)

Ambient light sensor board SR-2902 is an integrated ambient and infrared light sensor board, providing PWM , UART, and I2C interface features. The SR-2902 allows users to do dimming adjustment for display device through its PWM output signal. Its advanced self-calibrated photodiode array emulates human eye response with excellent IR rejection. The internal 16-bit ADC is capable of rejecting 50Hz and 60Hz flicker caused by artificial light sources. The lux range selection feature allows user to program the lux range for the optimized counts/lux ratio. The onboard micro controller transfers brightness data to the host control system through RS232 Interface. User can see all the light value change on host screen.

Digital light sensor chip
PWM output
Light Sensor Close to Human Eye Response
Excellent Light Sensor IR and UV Rejection
Tech Specs
Controller & Sensor
Digital light sensor
Ambient light sensing
Excellent response
Ultra low power
Selectable Range of Lux
Range 1 = 0.015 lux to 1,000 lux
Range 2 = 0.06 lux to 4,000 lux (Default)
Range 3 = 0.24 lux to 16,000 lux
Range 4 = 0.96 lux to 64,000 lux
Excellent Spectral Response
Light Sensor Close to Human Eye Response
Excellent Light Sensor IR and UV Rejection
Power Consumption
10mA Max Operating Current
Power Requirement
Board Dimension
50 (L) x 20 (W) x 6 (H) mm
Industry light control monitor
Light sensor digital signage
Brightness control broadcasting monitor
Industrial light control PC
Light control industrial automation device
Brightness control kiosks
Ordering Information
SR-2901 (Light Sensor I2C)
SR-2902 (Light Sensor PWM)
SR-2903 (Light Sensor DC)
SR-2904 (Temp Sensor PWM)
SR-2906 (Light & Temp Sensor PWM)