4-channel relay module, direct microcontroller control, opto-isolated inputs

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SKU : WPM400
Quantity on Hand : 4
Skill Level : Assembled and Tested

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11.45 11.450000000000001 USD 11.45


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Expanding your projects is easy with this 4-channel relay module. Perfect for controlling various devices, this module can be easily controlled directly via a microcontroller. The opto-isolated inputs ensure safety, while the status LEDs instantly show you the relay outputs. Suitable for input voltages ranging from 5-12 VDC and with an impressive relay output of 250 VAC 10 A, this module is ideal for both hobbyists and professionals.

+ Versatile : Can control various devices or other high-current appliances.
+ Direct control: Can be directly controlled by a microcontroller.
+ Safe: Features opto-isolated inputs for protection.
+ STEM project: Develop and improve your STEM skills and acquire the knowledge, skills and experience needed to face the technological challenges of the future with this educational kit. This educational kit will trigger a number of processes such as problem-solving, investigative and creative thinking.
+ Made in Belgium : Whadda is a unique brand from Belgium's Velleman Group that offers DIY projects for hobbyists or makers who want to immerse themselves in electronics, programming and mechanics


  • control input current (in1 to in4): 5 – 15 mA
  • control input voltage: 5 – 12 VDC
  • relay output: 250 VAC 10 A; 30 VDC 10 A (non-inductive)

Operational properties:

  • Instruction manual languages English
  • Coding skill level none
  • Electronics skill level none
  • Mechanics skill level none
  • Soldering skill level none

Product basic info:

  • Colour unit Light blue
  • Additional colour Blue
  • Depth unit 55 mm
  • Height unit 19 mm
  • Weight unit 61 g
  • Width unit 75 mm

Documentation and Downloads