4 Channel 12V Relay Board With ULN2003 IC


  • Relay Control for Arduino DSP AVR PIC ARM
  • Input IN1, IN2, IN3, IN4 signal line active low
  • 12V 4-Channel relay board controlled directly by micro-controller
  • ULN2003 IC used to drive Relays (better than Transistor Drive Circuits)



  • DC 12V 4-Channel Relay Module Optocoupler For Arduino PIC ARM AVR DS
  • This is a 12V 4-Channel Relay interface board
  • Be able to control various appliances, and other equipments with large current
  • It can be controlled directly by Micro-controller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic)
  • 12V 4-Channel Relay interface board, and each one needs 50-60mA Driver Current
  • Equiped with high-current relay, AC250V 10A ; DC30V 10A
  • Indication LED s for Relay output status
  • Input IN1, IN2, IN3, IN4 signal low level effectively
  • VCC, GND power input end, can supply power alone
  • Support all single-chip control, industrial area, PLC control, household intelligent control