Description

Condition: New

1ch 5V - 3EUR
1ch 12V - 3EUR
1ch 12V LDR - 5EUR
1ch 12V 433MHz - 6EUR
1ch 12V 0-999 delay relay (does not need arduino) 6EUR
2ch 5V - 4.5EUR
4ch 5V - 6EUR
8ch 5V - 10EUR
16ch 12V - 17EUR

x-Channel relay module, with photoelectric isolation
With power and relay action indicator
The module Operating voltage 5V/12V
Maximum load: AC 250V/10A, DC 30V/10A

1ch 12V LDR
Light detection, brightness test, through the potentiometer adjustable detection brightness valve point, take relay, can do all kinds of brightness detection switch, can control all kinds of street lamp, evening to be automatic open during the day, go out automatically and the car supplies control and automation equipment.
Module features:
1, the photosensitive resistance induction light intensity, bring relay, direct control load
2, with potentiometer sensitivity adjustment, by adjusting the potentiometer, set start relay valve value, when the dark at the threshold, the module relay suction close, light at the threshold, relay release;
3, 12 v power input for relay use, plate load 78 l05 regulated triode, provide sensor for comparison, make the products more stable and reliable;
4, plate load optical coupling isolation drive relay, effective protection chip, make the products more reliable work;
5, with four fixed bolt hole, convenient installation
6, small board PCB size: 5 cm x 2.6 cm
7, use wide voltage LM393 comparator
Module USES description:
1, photosensitive resistance module to the ambient light is the most sensitive, generally used to detect the surrounding environment of the brightness of the light.
2, module in dark environment in the default threshold value, relay suction close, public end and often start on, when the outside environment in bright light setting threshold, relay disconnect, public end and normally closed end on;
3, public end, often open, normally closed three port is equivalent to a double switch, relay coil have electric, public end and often start conducting, no power, public end and normally closed end conduction;
Electrical parameters:
The power supply voltage: 12 VDC
Current: more than 100 ma
Load: 250 v and a communication or 30 v and a dc (less than the range of current all can be used)