Supply voltage for the 24v: 20 V – 28 V
Supply voltage for the 12v: 8 V – 16 V
Current consumption: < 5 mA typical
Protection: Inverted polarity
Communication protocol: 1-Wire® protocol supporting DS1990A Serial Number iButton
Communication distance: 10 meters maximum
Dimensions : 55mm x 44mm x 23mm
Working Temp: -20ºC to 70ºC
Wire length: 150 cm
The keypad Interfaces
The following table presents the keypad interfaces. For each interface the wire,functionality and recommended connection is described.
WireName | WireColor | interface | Functionality | Connection |
Power | Red | Powering the keyboard | Vehicle power supply | |
Ground | Black | Powering the keyboard | Vehicle ground | |
Buzzer | Green | Pulled downinput | Control of the vocalindication (buzzer) | GPS unit output |
Door | Blue | Pulled up input | Activate the backgroundlight | Vehicle doors |
Data | Orange | 1-Wire®protocol | Communication with theGPS unit | GPS unit Dallasinterface |