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Uses:
Light detection brightness detected by potentiometer adjustable detection brightness valves, relays, switches can do a variety of brightness, you can control the lights, and automatically turn on at night, automatically extinguished during the day and supplies control and automation equipment in the car. ( Compare with photoresistors, directionality is better, can detect fixed direction of light, front detection photodiode light around it is difficult to detect, and often to seek light function )
Module features:
1, the use of photo-sensitive diode sensing the intensity of light, comes with relay, direct control load
2, power level indicator adjust the sensitivity by adjusting the potentiometer, set a start relay threshold, when at the threshold, relay module absorbs, darker than this threshold, relay release, therefore always open and common is the switch that controls the daytime, normally closed switch with the public side is to control the night.
3, operating voltage 5V

4 output type: AC 220V 10A or directly DC30V 10A load
5, with 4 fixing bolt holes for easy installation
6, small Board PCB dimensions: 5cm x 2.6cm
7, the use of wide LM393 voltage comparator
Electrical parameters:
Supply voltage: 5VDC

Current: greater than 100mA
Load 250V 10A AC or DC 30V 10A
Module description:
1, photo diode most sensitive to ambient light, usually used to test the brightness of the ambient light.
2, in ambient light module exceeds the set threshold value, the relay is snap, common beginning and often connected, and when the outside ambient light below the set threshold value, the relay disconnects, common and normally closed terminal connected;
3, common, normally open, normally closed three ports as a dual-control switch, relay coil is electrified, the common and often beginning breakover, when there is no electricity, common and normally closed-end conduction

Delivery form:
Photodiode module with relay 1, photodiode
Module wiring diagram

When measuring ambient light is higher than the set temperature, the relay is snap, bulb, below the set value, the relay disconnects, no lights (wiring diagram is said to be) for the connection of the high voltage.

When measuring ambient light is higher than the set temperature, the relay is snap, bulb, below the set value, the relay disconnects, no lights (wiring diagram is said to be) used to share the power supply connection.

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