4 relay extended version 5V with optocoupler isolation support AVR / 51 / PIC microcontroller DC 5V

4 relay output module， relay output contacts up to 250A 10A. Input IN1， IN2， IN3， IN4 signal line active low. VCC， GND power input， relay can be a separate power supply relay input JD-VCC.

use:

1， support single-chip control.

2， industrial areas;

3， PLC control;

4， home intelligent control;

【Features】
 Using high current relay， AC250V 10A DC30V 10A
 Contact part of the independent wiring， safe and reliable
 Standard interface， you can expand on a variety of development boards
 With fixed screw holes， easy to install
 Applicable to 51 / AVR / AVR / ARM and other platforms

Module Description:
1， the module meets the safety standards， the control area and the load area has a separate slot;
2， the use of double-sided FR-4 circuit board design， high-end chip production process;
3， the use of relay control;
4， with a relay action instructions， pull up bright， off is not bright;
5， the signal input terminal has a low level signal， the common side and often open will turn on;
6， the relay can directly control a variety of equipment and load;
7， there are four normally open and four normally closed contacts;
8， blue KF301 terminal control line is more convenient.
9， module size: 75mm * 55mm * 18.5mm (length * width * height)， net weight: 61g
10， with 4 fixed bolt holes， hole 3.1mm， spacing 68mm * 48mm
11， the finished product through 100% functional testing and stability testing is very convenient
Two module interfaces:
1， VCC: then 5V power positive
2， GND: then 5V power supply negative
3， IN1-IN4: signal trigger side， active low
Relay output: a 12-wire interface， all interfaces can be directly connected leads to user-friendly
1， NO1 - NO4: relay normally open interface， the relay before the suspension， after the short circuit with the COM
2， COM1 - COM4 relay common interface
3， NC1 - NC4: relay normally closed interface， the relay before the connection with the COM shorted， pull after the suspension