Protective Device Digital Display Protector Under Voltage Adjustable Automatic Reset 230V 1. Better Displays: Digital display enables clear view in voltage measurement, making the operation safe and reliable.2. Intelligent adjustment: adjustable above and below voltage protection and recovery values, and the operating time is also adjustable.3. Reset delay: Supports automatic reset delay, both delay time and power-on delay time are adjustable.4. Other Features: This voltage limiter is equipped with reset mode selection, fault inquiry and factory reset functions.5. Easy to Install: Comes with light weight and compact size, simple installation can be quickly completed in minutes. Specification: Item Type: Under Voltage Protective Device Material: Fireproof PC. Rated Voltage: 230V AC Over Voltage: 230-300V Under Voltage: 140- 210V Package List: 1 x Voltage Protective Device