Features: *Brand new and high quality *Made of high quality material, strong and durable *Overvoltage protection *Under voltage protection *Overcurrent protection *Automatic recovery *Voltage display (voltage measurement) *Current display (current measurement) *Voltage calibration: Voltage +-10% adjustable. A13 *Restore factory settings: Press and hold the down key for more than 12 seconds *Fault inquiry: press the UP key for more than 12 seconds Specification: *Name: Dual-display self-resetting over- and under-voltage protector *Current models: 40A, 63A, 80A (optional) *Rated voltage V: AC220V *Product type: Motor control protection unit *Rated power W: 50HZ/60HZ *Color: white color *Electrical life: ≥100,000 times *Humidity: ≤50% at 40°C (no condensation *delay: 0.1S~30S (default: 1S) *Wiring method Top in and bottom out *Number of continuous overcurrents: 0-20 times, closed by default *Rated insulation voltage: 450V *Storage temperature: -25°C-55°C *Operating temperature: -5°-40°C *Altitude: ≤2000m *Contamination level: 3 *Protection level: IP20 *Size: 38*68*86 Package Included: 1 X over and under voltage protector Notes: 1. Due to various factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you. Self-Restorable Adjustable Over-Voltage And Under-Voltage Protector Reset Switch