Specification: - Name: Tachometer - 7 Colors Backlight - High Precision - Size: 85mm - Signal: Pulse - Working Voltage: 9-32VDC - Working Current: - Backlight: 7 Color Backlight - Engine Hours: 0.0-99999.9H - Working Temperature: -30-70°C - Storage Temperature: -40-85°C - Waterproof and Dustproof Rating: IP67 - Functions: Current Tacho/RPM and Hour Meter - Operation Mode: LCD Display, Stepper Motor - Tachometer fits for Car / Truck / Boat / Diesel Generator Engine / Gasoline Engine Features: - Waterproof Rating: IP67 - Excellent anti-fogging function - Curved glass with anti-fog function - 316 Stainless steel bezel with curved glass - Convenient installation via multi-plug socket connection - Backlight colors (red, yellow, orange, green, blue, purple, white); users can adjust preferred color - Compatible with Car, Truck, Boat, Diesel Generator Engine, Gasoline Engine Package Included: 1 x Boat Tachometer 1 x Cable 1 x Installation Kit Sensor Specification: - Name: Tachometer Gauge Sensor - Used for Gear Rotation Speed Measurement - Features stable signal, wide operating temperature range, compact size, simple assembly - Signal Duty Factor: 47±5% - Output Signal: Sine Wave - Operating Temperature: -40 to 85°C - Inductance Distance: Less than 1mm - Tooth Module: 2–6 - Connection Type: Two-Wire - Protection Rating: Waterproof IP67 Note: Two sensor models available: 78.2mm x 18mm (L x W) and 78.2mm x 16mm (L x W) Package Includes: 1 x Tachometer Gauge Sensor