This set consists of one USB charger adapter， one digital voltmeter and one digital amperemeter. The USB charger adapter provides dual USB ports for charging the mobile phone， GPS， camera， MP3 or other electronic products. The voltmeter can check the voltage and display clearly in red LED. The digital amperemeter can check the current and display in red LED.<br /><br />Features:<br />1 USB charger adapter with 2 ports +1 digital voltmeter +1 digital amperemeter.<br />Over-load and short circuit protection， reverse polarity protection.<br />With waterproof sealing cap， good waterproof performance.<br />USB charger adapter is designed with built-in blue LED indicator light.<br />Comes with mounting panel， screws and terminals， easy to install.<br /><br />Specifications:<br />Color: Black<br />USB LED Light Color: Blue<br />USB Input Voltage: DC 12-24V<br />USB Output Voltage: DC 5V<br />USB Output Current: 3.1A (1A+2.1A)<br />Voltmeter Measureing Range: 6V-30V<br />Voltmeter Display: Red LED Digital Display<br />Amperemeter Measureing Range: 0A-10A<br />Amperemeter Display: Red LED Digital Display<br />Material: ABS<br />Item Size: Approx. 15 * 5.3 * 4.4cm / 5.9 * 2.1 * 1.7in<br />Item Weight: Approx. 85g / 3.0oz<br />Package Size: Approx. 22 * 15 * 4.5cm / 8.7 * 5.9 * 1.8in<br />Package Weight: Approx. 102g / 3.6oz<br /><br />Package List:<br />1 * Cigarette Lighter USB Charger Adapter + Digital Voltmeter + Digital Amperemeter Set with Cap Mounting Panel<br />1 * Pack of Screws and Terminals<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-LTjn.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-eZKH.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-ezq7.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-vybX.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-QmEG.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-qn1H.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-6F2X.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-NBKV.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-BuxY.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/K/7/K3757/K3757-1-352a-Vv9B.jpg" /><br>