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RELAY-4 Support & Frequently Asked Questions


[1] How much current does the RELAY-4 board draw ?


[1] How much current does the RELAY-4 board draw ?

Each relay coil draws a nominal 72 mA. If you turn on allthe relays at the same time, this translates to almost 300 mA per RELAY-4board. If you have two RELAY-4 boards stacked, with all the relays on, you are drawing 600mA from the 5V supply. Please be careful as this may exceed the capacity of the regulator on some of our microcontroller boards.