Sierra Tachometer/Hourmeter w/Sensor Wire #18-56969P
- For any gasoline motor up to 2 cylinder. Displays RPM up to 9000. Allows hour monitoring for even the smallest outboard motors. Great for 2 or 4 stroke. Displays RPM when running total hours when off.
- Features:
- No power or ground required
- Water and shock proof
- Automatically turns on and off with the engine
- Displays up to 9999 hours
- 10 year internal battery lifetime