1 CH 5V Relay Module (High Level Trigger) KY-019

1 Channel 5V Relay Module Shield for Arduino ARM PIC AVR DSP (KY-019)

1 , New 5V Relay Module

2 , Can be used as microcontroller development board module can be used as home appliance control

3,  3.3V-12V to TTL control signal

4, the control signal DC or AC , 220V AC load can be controlled .

5, there is a normally open and one normally closed contact

6 , A power indicator light

7 , A control indicator , pull off, disconnect does not shine

8 , transistor drive to increase the relay coil control pins high impedance.

9 , the control pin has a pull-down circuit to prevent malfunction relay vacant