12V light control switch the photoresistor plus relay module the light detection switch photosensitive sensors arduino
Light detection, brightness detection, through the potentiometer adjustable valve testing point, built-in relay, can do all kinds of luminance detection switch, can control all kinds of lamps, automatically open in the evening, automatically go out during the day and the car supplies control and automation equipment.
The module features:
1, using photosensitive resistance induction light intensity, built-in relay, direct control of the load
2, with a potentiometer sensitivity adjustment, by adjusting the potentiometer, set the start relay valve value, when the dark at the threshold, relay and module, light on the threshold, the relay release;
3, 12 v power supply input for relay, onboard 78 l05 regulator triode, provide sensor is used, make our products more stable and reliable;
4, the onboard optical coupling isolation drive relay, effective protection chip, make our products more reliable;
5, equipped with four fixed bolt hole, convenient installation
6, small board PCB size: 5 cm x 2.6 cm
7, use the LM393 wide voltage comparator
1, the photosensitive resistance module's most sensitive to ambient light, commonly used to detect the environment around the brightness of the light.
2, module in ambient light and dark in the setting threshold, relay, absorption and often start through public end, and when the external environment in the bright light setting threshold, relay disconnect, public end with normally closed end connected;
3, the public side, normally open, normally closed three ports is equivalent to a double switch, relay coil there is electricity, and often start conducting public end, without electricity, public end with normally closed end conduction;
The power supply voltage: 12 VDC
Current: greater than 100 ma
10 a load: 250 v ac or 30 v dc 10 a (below this all can be used within the scope of the current)