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Optical coupling isolation drive relay can effectively safeguard chip and ensures a better performance.
12V power supply input special for relay, using a wide voltage LM393 comparator, more stable and reliable.
Widely used for light detection, brightness detection, all kinds of light detection switch, controlling street lamps, and automatic equipment.
Adjust potentiometer to change sensitivity and set relay start threshold; when it is darker than the threshold, relay is energized; when it is brighter than the threshold, relay is de-energized.
This switch uses photoresistor to sense intensity of light and good quality relay can directly control load.
Specification:
Voltage: 12VDC
Current: >100mA
Load Capacity: 250V 10A AC; Or 30V 10A DC
PCB Size: 5*2.6cm/1.96*1.02"
Color: Blue
Instruction:
1, Photosensitive resistance module is sensitive to ambient light, commonly used to detect the brightness change of ambient light.
2, Relay module is energized when ambient light is darker than set threshold; COM and NO terminals are connected. Relay module is de-energized when ambient light is brighter than set threshold; COM connect to NC terminal.
3, COM, NO and NC terminals are equivalent to a three-way switch. When relay coil is energized, COM is connected to NO terminal. When coil is not energized, COM is connected to NC terminal.
Package Includes:
1 x Photoresistor Switch
