1: P1C16f628a microcontrollers
2: Do not need batteries, power from the ignition
3: Standard Futaba Plug(Black-negative Red-Postive and White-Signal)
4: Using high-brightness LED digital tube
5: Input voltage range: 3.5V -8.4V
6: Current consumption 25mA-60mA
7: Mini tachometer indicates up to 30000rpm
8: Actual RPM=Display digital *10
9: Body size:41mm L*17mm W*12mm H
10: Window size:30mm L*15mm H
11: Weight: 8.5g(0.3OZ)
Instructions:
1: The Y wiring tandem between in the Hall sensor and the ignition
2: The tachometer plug the other end with Y wire
3: Connected to ignition power supply and can be displayed