5V Relay Module
The relay on this module is rated for a maximum of 10A current. The output contacts are isolated from the input contacts. We've sourced a new and improved module that has air gap isolation between low voltage and switching contacts.
Relays are sometimes used to switch mains level voltages; however we recommend against working with mains level voltages unless you are a trained professional. Mains voltages are NOT suitable for hobby use and can result in severe trauma or death if not treated with care.
- Connect the module pins GND and VCC to GND and +5V respectively.
- The IN pin can now be used to switch the relay on and off. This input is microcontroller-compatible so does not require a lot of current. The module has an on-board transistor drive circuit to deliver the higher currents needed to operate the relay coil.