Welcome to our store! 1. Wide Application: Suitable for monitoring batteries, solar panels, model railways, RVs, motorcycles, household batteries, motors, etc. 2. 2 Color Display: Voltage current meter with LED red and blue 2-color display; red for voltage, blue for current, clear and intuitive. 3. Basic Parameters: Power supply range is DC4-30V, update rate is about 300ms each time, and working temperature is -10℃-65℃. 4. Function: Digital voltmeter ammeter supports voltage and current testing, offering stable performance and high accuracy, making it an excellent electrical accessory. 5. Easy to Use: Made with high-quality electronic components, durable and wear-resistant, with mounting wires for easy installation and disassembly. Item Type: Voltage Current Display Material: Electronic Components Product Size: Approx. 48x29x16mm / 1.9x1.1x0.6in Power Supply Range: DC4-30V Voltage Measurement Range: 4.5-100V Update Rate: Approximately 300ms each time Display Color: Red + Blue Lead Length: Approx. 15 cm / 5.9 inches Working Temperature: -10℃-65℃ Package Includes: 1 x Voltage Current Display 1 x Shunt 2 x Lead Customers are our top priority. If you encounter any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.