Features: Protections function: With overvoltage, undervoltage and overcurrent protections, when the Voltages and current are too high or too low, the protections function will be activated. Voltages display (Voltages measurement): You can see the Voltages value clearly and intuitively. Current display (current measurement): current value can seen clearly and intuitively. Easy to install: No additional tool are need, and the installation process is very convenient. LCD screen: The LCD display is clear and easy to read, and the data can be read directly. Specifications: Materials: Plastic Current: 40Amp/63A/80A Size: 85x65x36mm/3.35x2.56x1.42inch Package Includes: 1pc Voltages Protectors note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.