Features 1.12-24V input voltage, widely used for 12V-24V cars, RV, caravans, trailers, buses, boats, yachts, marine etc 2.Dual USB charger port for meet your various charging needs, fast charging for iOS/Android mobile phone, GPS navigation, camera, etc 3.Built-in voltmeter, can real-time monitor your vehicle's voltage, more convenient and safe 4.Cigarette lighter socket with seal cover, dust-proof and waterproof 5.ABS/PC/PBT environmental protection and flame-resistant materials, can be used in an environment with -25℃ to 80℃ temperature Specification Features: 12-24V input voltage, widely used for 12V-24V cars, RV, caravans, trailers, buses, boats, yachts, marine etc. Dual USB charger port for meet your various charging needs, fast charging for iOS/Android mobile phone, GPS navigation, camera, etc. Built-in voltmeter, can real-time monitor your vehicle's voltage, more convenient and safe. Cigarette lighter socket with seal cover, dust-proof and waterproof. ABS/PC/PBT environmental protection and flame-resistant materials, can be used in an environment with -25℃ to 80℃ temperature. Specifications: Material: ABS + PC + PBT Item Color: Black Light Color: Blue, Green (optional) Max. Power: 240W Input Voltage: DC12V/24V Output Voltage: 5V Output Current: 3.1A Voltmeter Measurement Range: 6-30V Protection Grade: IP65 Certification: CE Size: 10.5 * 8.5cm/4.1 * 3.3in Package Weight: approx.151g Fitment: Universal Package List: 1 * Dual USB Car Charger Voltmeter Switch 4 * Screws Package List