![1 Channel 5V Relay Module for Arduino 1-Channel relay KY-019](http://sunhokey.cn/cdn/shop/products/4_5933de72-da47-46f5-96be-9c516a65398f_{width}x.jpg?v=1531902717)
1PC Relay Module
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
Transistor drive to increase the relay coil control pins high impedance.
Product description
Features:
1, The new 5V Relay Module
2, Can be used as a microcontroller development board module can be used as home appliance control
3, A power indicator light
4, A control indicator, pull off, disconnect does not shine
5, The control pin has a pull-down circuit to prevent malfunction relay vacantly