Relay board module is used for controlling higher current loads from your microcontroller development board, PC parallel port or Arduino Uno. TWO CHANNEL 2CH 12V RELAY BOARD CONTROLLABLE with 3.3V & 5V for Raspberry Pi Arduino AVR PIC 8051.Safe, Reliable Power Control. One circuit, 4 outlets, 2x NC, 2x NO. Wires to your Arduino, Raspberry Pi, PIC, or other micro. Takes the place of a relay board. Electronics-Salon RPi Power Relay Board Expansion Module, for Raspberry Pi A+ B+ 2B 3B.
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