The AR0226 1-Wire Keypad is a keypad which can be connected to a DM device where a keypad is required instead of a swipe fob/access card. Some organisations prefer this as cards/fobs do not need to be distributed.
Check Datasheet Carefully
This guide is based upon feedback from DM Partners and what has worked on specific keypad models. Please check the keypad datasheet carefully, as this product is not supplied by DM some elements may change in the future.
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|Wire Name||Colour||Function||Connect to|
|Backlight||Blue||Provide power to illuminate keypad backlight|
|iButton Signal||Orange||iButton Signal Line||Connect to G120|
Green (pin 13) and Brown (pin 14)
|Power||Red||Powering Keypad||Vehicle Power|
Check voltage spec on Datasheet Carefully
Must be powered externally to device
|Ground||Black||Chassis or G120 Ground|
1. Ensure 4 wire plug function is set to iButton, and Poll iButton = Yes
This is the only step required to read codes from the keypad.
The keypad has an internal buzzer. However it is activated by applying 12V to the buzzer control line. There is no 12V output available on the G120 - so instead it is easiest to instead Connect an External Buzzer.
Ensure this parameter is set to have the buzzer sound when a trip is started and no PIN is entered
Driver ID in Telematics Guru
To enter driver codes in TG,
- Admin → Drivers
- Create a new Driver
- Enter the details, ID Type is 'iButton', and enter the code with leading 0's to make 12 digits.
i.e. keypad code 1234 = 000000001234