Features:1. Good product stability and high measurement accuracy.2. The exterior size is standard and easy to install.3. Uses polarity protection line for Power supply.4. Mini size, portable and convenient.5. High quality and durable for long term use.Specifications:Technical Parameters:Supply voltage: DC4.5~30VAmmeter range: 10A (with overcurrent protection)Working current: <30mAWeight: 17.5g/0.62ozDisplay mode: 3 digits 0.56'Size: Approx. 48*22*29mm/1.89*0.87*1.14in (length X width X height)Mounting bore: 45.5*25.5 mm/1.79*1 inMeasuring rate: >200Ms Measurement accuracy: 1%Extreme working conditions:Low operating voltage: 4.5V Maximum operating voltage: +30V Maximum current output: 9.99A Operating temperature: 1~+65C)Working humidity: 10~80% (no condensation)Working pressure: 80-106kPa Sun exposure: no direct irradiationColor: Red Yellow Green Blue OptionalPackage List:1 * Digital DC current Ammeter2 * Cable