This product displays the voltage of car battery <br />Screen digit color: red <br />High brightness LED display, easy to see the product voltage display <br />Power by car cigarette lighter battery charging<br />Constantly monitors the battery voltage and protects and prolong battery and engine's life <br />Healthy standards of engine battery: <br />When the engine is running (non-driving state), 12V car: 13.5 to 14.5, 24 V car: 26.0 to 28.0 <br />When the engine is turned off, 12V car: 12 or more, 24V car: 24<br />Color: Black <br />Material: ABS <br />Size: about 70 x 40 x 30 mm <br />Features: <br />1. Suitable for DC12/24V car <br />2. Measuring range: DC 8V-30v ± 1.2%<br />1 x Car 12V/24V Voltage Meter<br /><img src="http://img6.eachbuyer.com/x21/p66/bq809_1.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x21/p66/bq809_2.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x21/p66/bq809_3.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x21/p66/bq809_4.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x21/p66/bq809_55.jpg" / noproxy>