use:
Light detection, brightness detection, through the potentiometer can be adjusted to detect the brightness of the valve point, comes with relays, do a variety of brightness detection switch, you can control a variety of street lights, automatically open at night, during the day automatically off and vehicle control and automation equipment.(Compared with the photoresistor, the direction is better, you can sense the fixed direction of the light source, the detection of light in front of the photodiode, the surrounding difficult to detect, often in the search function)
Module Features:
1, the use of photosensitive diode-induced light intensity, comes with a relay, direct control of the load
2, with the potentiometer to adjust the sensitivity, by adjusting the potentiometer, set the start relay threshold, when the light is on, the module relay pull, hidden in this threshold, the relay release, so then open and public Side is to control the day of the switch, then closed and the public is the control of the evening switch.
3, the working voltage 12V
4, the output form: directly AC 220V 10A or DC30V 10A load
5, with four fixed bolt holes, easy to install
6, small board PCB size: 5cm x 2.6cm
7, using a wide voltage LM393 comparator
Electrical parameters:
Supply voltage: 12VDC
Current: greater than 100mA
Load: 250V 10A AC or 30V 10A DC
Module instructions:
1, photodiode is most sensitive to ambient light, generally used to detect the brightness of the ambient light.
2, the module in the ambient light exceeds the set threshold, the relay pull, the common side and normally open end, when the ambient light below the set threshold, the relay is off, the common end and normally closed end;
3, the common, normally open, normally closed three ports is equivalent to a dual control switch, the relay coil has electricity, the common side and normally open at the beginning, no power, the common and normally closed end conduction

Shipping list:
Photodiode with relay module 1, with photodiode
Module wiring diagram

When the detection of ambient light is higher than the set temperature, the relay pull, light bulb, below the set value, the relay is off, the light is not bright (the figure is only said wiring method), for high voltage connection.

When the detection ambient light is higher than the set temperature, the relay pull, light bulb, below the set value, the relay is off, the light does not shine (pictured only the wiring method), for the common power connection.

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