! 10 DB 4 csatornás relé modul 4 csatornás relé modulok, relé vezérlőkártya optocsatolóval
! 10PCS 4 channel relay module 4-channel relay modules, relay control board with optocoupler
The new 5V Relay 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
32701305610 - aitex