5V Relay 4Channel Module for Arduino, microcontrollers, Raspberry..etc
	

The 5V Relay 4Channel Module Can be used as microcontroller development board module can be used as home appliance control	
       5 V-12V to TTL control signal	
       The control signal DC or AC, 220V AC load can be controlled.	
       There is a normally open and one normally closed contact	
       A power indicator light	
       A control indicator, pull off, disconnect does not shine	
       Transistor drive to increase the relay coil control pins high impedance.	
       The control pin has a pull-down circuit to prevent malfunction relay vacant.
       SMD Components.