1. Appearance design: The product adopts one-piece molding design, the whole is white, the shape is small, easy to use, and the operation is simple and convenient. 2. Self-resetting design: The product adopts an intelligent self-resetting design. In the case of overvoltage or undervoltage, it can delay automatic reset to avoid the problem of secondary operation. 3. Protection function: The product is an intelligent self-resetting switch, which provides over-voltage, under-voltage protection, zero-break and phase-break protection, which can protect the equipment from damage. : Rated voltage: 230V/400V AC 50/60Hz Disconnect capacity: Overvoltage: 210-300V-OFF Undervoltage: 219-150V-OFF (adjustable) Rated current: 50A Display mode: LCD Delay time recovery: 2-512 seconds Electrical isolation strength: more than 2000V AC pulse 2.5KV 1.2/50S Colour: white Material: ABS + electronic component Size: 65 x 70 x 80mm Package Contents: 1 * Automatic voltage relay 1 * User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.