SMART VOLTAGE PROTECTION SYSTEM: Realtime voltage and current monitoring with automatic power cutoff when detecting over/under voltage (130V 300V/80V 210V) or overcurrent conditions; automatically restores supply when readings to normal, keeping your electrical appliances safe without constant supervision. SAFETY PARAMETERS: Voltage thresholds and current limits are set within certain ranges. It is controlled by an intelligent chip, with a clear LCD screen displaying realtime electrical data at zero power consumption. PROFESSIONALGRADE INSTALLATION: Designed for standard 35mm DIN rails fitting into any electrical distribution box, with heat and cold resistance for harsh environment operation, offering both manual and auto recovery options plus tamperproof lock settings for continuous protection. COMPREHENSIVE MONITORING DISPLAY: Toggles between voltage, current, frequency and power consumption with intuitive red/green status indicators and energysaving dimming mode for extended display life and reduced power usage. USE SCENARIOS: Protect home electronics such as TVs, computers, printers and other appliances in areas with voltage fluctuations. Safeguard network and data equipment in rackmounted environments (servers, switches, NAS, UPS) in offices or data centers. Deploy in industrial or outdoor installations where equipment is exposed to temperature variation and harsh conditions.