Ocean Pro Tach Gauge : Black

Ocean Pro Marines tachometers are suitable for all kinds of tach sensors which display the rotation speed of the engine. The gauge uses a moving-magnet principle to drive the needle, featuring great endurance and anti-vibration. All Ocean Pro gauges are waterproof, rain-proof, dust proof, and anti-fogging.   Product Description Ocean Pro LCD Tachometer Gauge : Marine/Boat Meter  Gauge Type : Tachometer Working Voltage : 12/24V Indicating Range : 0-8000 RPM Material : Stainless Steel, PVC, Glass Color : Black Diameter : 3 1/2"  Working voltage : 9 - 32VDC Working current : ≤ 100mA Operating temperature : -30° - 75° Storage temperature : -40° - 85° 2 Stroke Speed Ratio : Ratio is equal to cylinder number 4 Stoke Speed Ratio : Ratio is equal to half of the cylinder number Package Includes : Tachometer, Standard Cable, Voltage Dropping Resistance Line, Manual Use : Marine/Boat Meter    Installation instructions: 1. Cut a hole in the panel (of your console or