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4 Channel Relay Module For micro:bit®

by Velleman

This 4-channel relay interface board can control various appliances and other equipments with high current. It can be controlled directly by a micro:bit®


  • BBC micro:bit® interface connector
  • indicator LEDs for relay output status
  • 3.3 V regulator on board


  • control input current (P3, P4, P6, P7): max. 5 mA
  • control input voltage: 3.3 - 5 VDC
  • relay output: 24 VDC 3 A (non-inductive)
  • dimensions: 57 x 80 mm
  • operating voltage: 5 VDC
  • contacts: NO / NC