KY-019 5V 1 Channel Relay Module Board for Arduino

Features:

• The new 5V Relay Module

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

• 3,5 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