KY-019 5V One 1 Channel Relay Module Board Shield for PIC AVR DSP ARM for Uno Relay

Description

KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM for Uno Relay     Description:1.the new 5V Relay Module2.can be used as microcontroller development board module can be used as home appliance control3.5 V-12V to TTL control signal4.the control signal DC or AC, 220V AC load can be controlled.5.there is a normally open and one normally closed contact6.a power indicator light7.a control indicator, pull off, disconnect does not shine8.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   Package Included:1 Pcs 1 Channel Relay Module\