High quality material can be used for a long time even in acid, alkali and humid environment IP67 waterproof and dustproof grade The stepper motor is suitable for all kinds of inclinometers and has the advantages of low power consumption, long service life and high accuracy. With glass (with anti-fog function) Backlight color: red backlight Function: current speed / RPM and time Indicating range: 0-4000 Operation mode: LCD display, stepper motor Suitable for car / truck / boat / crude oil generator / gasoline engine Voltage: 12V / 24V Installation diameter: 52MM color: silver + black Material: stainless steel + plastic Package Contents: 1 x Tachometer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.