– Uses  PIC16f628a microcontrollers
-Does not need batteries, powered from the  ignition
-Standard FUTABA plug(Black-Negative Red-Positive and White-Signal)
-Uses high-brightness LED digital tube.
-Input voltage range:3.5V-8.4V
-Current consumption 25mA-60mA
-Mini tachometer indicates up to 30000 rpm
-Actual RPM= Display Digital *10
-Body Size: 41mm L x 17mm W x 12mm H
-Window Size: 30mm L x 15mm H
-Weight:8.5g   (0.3OZ)