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Name: 5V 1 Channel Relay Module 1Way Relay For PIC AVR DSP ARM 1. Working Voltage: 5VDC at Optional 2. It can be used as micro controller development board module and home appliance control. 3. 5 Volt to TTL control signal. 4. The control signal DC or AC, 220V AC load can be controlled. 5. There is a normally open and a 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.
