Eluto 2"52mm Water Oil Temp/Pres Volt Tacho Boost AFR Gauge 10-color LED Digital Display Main Features: 1Double Vision Display, Analog & Digital Readings. 2A warning value (arbitrary) can be set and the warning buzzer can be selected from three variations or turn off. 3The buzzer can be selected in three loud levels. 410 colors backlights can be selected, and it can memory the setting in the both daytime and night mode. 5Brightless can be selected in 5 different levels, and it can memory the setting in the both daytime and night mode. 6Brushless stepper motor technology. 7Data obtained during driving (peak value and warning value) can be stored up, and the peak value can be reviewed and cleared. Specification: Material: Metal Housing Color: Black Lens Color: Transparent Face Color: Black Voltage: 12V Diameter Size: 2"(52mm) Style: Red Illuminated Needle Readout Features: -2"(52mm) Black Face Gauge with a Magnified Tinted Lens. -10 Color LED Through Dial Lighting with Color Recall Ability. -10 Solid Color Settings will meet your requirement, no matter what color you want. -Suitable for 12v vehicles. -LED super bright display. -The button on the lens can switch the color light you want. Power Wires Connecting : White wire : To 12V wire when ignition on Red wire :To 12V battery wire Yellow wire : To 12V wire when small lamp on Black wire : To ground - 8 Different Types Gauges 1.Water Temperature Gauge Reading range: 20~120 Sensor Thread Size : 1/8"NPT Package includes: 1 x Water Temperature Gauge 1 x Mount Bracket Cup 1 x Meter Wire 1 x Power Supply Wire 1 x Temperature Sensor 1 x Double Sided Tape 2 x Buffer 2.Oil Press Gauge : Reading Range: 0-10 x100kpa Sensor Thread Size : 1/8"NPT Package includes: 1 x Oil Press Gauge 1 x Mount Bracket Cup 1 x Meter Wire 1 x Power Supply Wire 1 x Rubber Hose ID 4mm 1 x Three Way Joint ID 4mm 1 x Double Sided Tape 2 x Buffer 3.Volt Gauge: Reading range: 10-15V Package includes: 1 x Volt Gauge 1 x Mount Bracket Cup 1 x Meter Wire 1 x Power Supply Wire 1 x Double Sided Tape 2 x Buffer 4.Oil Temperature Gauge: Reading range: 50~150 Sensor Thread Size : 1/8"NPT Package includes: 1 x Oil Temperature Gauge 1 x Mount Bracket Cup 1 x Wire 1 x Power Supply Wire 1 x Temperature Sensor 1 x Double Sided Tape 2 x Buffer 5.Boost Gauge PSI: Reading range: -30~+30PSI Package includes: 1 x Boost Gauge 1 x Mount Bracket Cup 1 x Wire 1 x Power Supply Wire 1 x Three Way Joint ID 4mm 1 x Rubber Hose ID 4mm 1 x Double Sided Tape 2 x Buffer 6.Boost Gauge BAR: Reading range: -1~2 x100kpa Package includes: 1 x Boost Gauge 1 x Mount Bracket Cup 1 x Wire 1 x Power Supply Wire 1 x Boost Sensor Wire 1 x Three Way Joint ID 4mm 1 x Rubber Hose ID 4mm 1 x Double Sided Tape 2 x Buffer 7.Exhaust Gas Temperature Gauge : Reading range: 2-11 x100°C Sensor Fitting Thread Size : 1/8"NPT Package includes: 1 x Exhaust Tem Gauge 1 x Mount Bracket Cup 1 x Exhaust Temperature Sensor 1 x Fitting 1 x Meter Wire 1 x Power Supply Wire 1 x Double Sided Tape 2 x Buffer 8.Tachometer Gauge: Reading range:0-9000RPM Package includes: 1 x Tachometer Gauge 1 x Mount Bracket Cup 1 x Tachometer Signal Wire 1 x Wire 1 x Power Supply Wire 1 x Double Sided Tape 2 x Buffer Note: The product is designed for use on 12v vehicles.Do not install this product on vehicles with 24v systems. Do not perform installation of this product immediately after the engine has been switched off. The engine and exhaust system are extremely hot at this time and can cause burns if touched. The LED color display of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) Instructions Is Included.Professional Installation Is Highly Recommended!!If you want to know how to use or install it,please