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: -30C to 70C - Storage Temperature: -40C to 85C - Waterproof and Dustproof Rating: IP67 - Functions: Current Tacho/RPM and Hour Meter - Operation Mode: LCD Display, Stepper Motor - Compatible with 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 - Easy Installation via Multi-Plug Socket Connection - 7 Backlight Colors (Red, Yellow, Orange, Green, Blue, Purple, White), Adjustable by User Package Included: 1 x Boat Tachometer 1 x Cable 1 x Installation Manual 1 x Tachometer Gauge Sensor 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: -40C to 85C - Inductance Distance: Less Than 1mm - Tooth Module: 26 - Connection Type: Two-Wire Connection - Protection Rating: Waterproof IP67 Note: We offer 2 sensor models with sizes: 78.2mm x 18mm (L x W) and 78.2mm x 16mm (L x W) Package Includes: 1 x Tachometer Gauge Sensor