The photosensitive resistor module most sensitive to ambient light, generally used to detect the brightness of the ambient light, triggering microcontroller or relay modules;The module brightness of ambient light reach the set threshold, DO-side output high when the ambient light level exceeds the set threshold, DO-ended output low;DO output can be directly connected with the microcontroller through the microcontroller to detect high and low, thereby detecting changes in ambient light intensity;DO OUR outputs can directly drive the relay module, which can be composed of a light control switch.Speed range of 0% to 100%Feature:Using the sensitive type photosensitive resistance sensorThe comparator output signal clean waveform is good, driving ability, than 15mA.With adjustable potentiometer can adjust the brightness of the light detectedWorking voltage 3.3V-5VThe output format: Digital switching output (0 and 1)With bolt holes for easy installationA small board PCB size: (L*W)3.20 x 1.40cm/1.26'*0.55'Using a wide voltage LM393 comparatorQuality:1pcProduct connection details:VCC connect the power positive 3.3-5 vGND connect power cathodeDO TTL switch signal outputAO analog signal outputNote:Size for manual measurement, theremay be a 0 to 2 cm error, belongs to the normal phenomenon.And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank youPackage includes:1Pc xIntensity Sensor Module