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Connecting a DM iButton reader to the G70

The Digital Matter iButton Reader has the following wire colours:

Wire ColorFunction
RediButton Signal Line
GreenGreen LED
(with 1000 ohm resistor)
BrownRed LED
(with 1000 ohm resistor)
YellowLED Negative

G70 Harness Definition

See G70 Harness Definition

Connecting an iButton Reader to the G70

  • Connect Brown (Driver ID 1/iButton Line) on the G70 to the Red iButton Signal Line
  • Connect the Black iButton wire to Ground


The G70 must be told to expect an iButton input in parameters, which it is by default under the Driver ID Function tab.

Once these connections are made, the device can now read the iButton data. 

Note: Some iButton readers require the Poll iButton parameter to be enabled.

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