⚡ Expert Features — The Mini Power Guardian With Big-Brain Voltage Voodoo ⚡ True Online Double-Conversion Wizardry – The SMART X ST Series is built for clean, stable, uninterrupted power, using high-frequency online architecture to keep your sensitive gear protected at all times. Rated 1KVA Of Ongoing Defense – With a solid 1kVA/0.9kW output, the ST 1KVA model shields small to medium equipment from voltage chaos, brownouts, and surprise blackouts. Zero-Millisecond Switching – Power cuts? Voltage dips? This unit switches between mains and battery with a flawless 0ms conversion time, so your equipment won’t even blink. Sine Wave Output – You get pure, stable AC sine-wave output—no noisy square waves, no weird harmonics—ideal for servers, cameras, POS systems, networking devices, and medical/industrial electronics. Smart Overload Intelligence – Multiple stages of overload warnings automatically reroute to bypass mode with precise timing (30 minutes, 10 minutes, 30 seconds, or 200 ms depending on load). AI-Like Power Efficiency – With ≥90% efficiency in normal mode, the UPS wastes less energy while delivering high stability. High Compatibility Input Range – Accepts 90–285Vac, perfect for areas with unstable grids, generators, or dynamic voltage environments. Built-In Battery Convenience – The ST 1KVA variation comes with a 24VDC internal battery system (2 batteries) so installation is simple, mobile, and clutter-free. Power Factor Of 0.9 – More real usable power for your devices—no hollow wattage games. Quiet, Cool, Reliable – Operates at ≤50 dB, supports 0–40°C, and runs in 20–95% humidity environments without drama. Compact And Deployable – Small footprint (280×144×230 mm) and only 7.8 kg, ideal for offices, shops, server corners, and mission-critical control rooms. 📊 Expert Specs — SMART X ST 1KVA  Category Specification Model ST 1KVA Rated Power 1kVA / 0.9kW Classification Lighting/Power, Standby Machine, Standby UPS, Sine Wave Output UPS Protection Overvoltage Input Voltage Range 90–285Vac (1P2W+G) Input Frequency Range 40–70Hz (Settable) Input Power Factor ≥0.99 Output Voltage 220Vac (1±2%) Output Frequency 46–54Hz (Sync), 50Hz Battery Mode Rated Current 4.5A Output Power Factor 0.9 Output Harmonic Wave ≤4% (Full Resistive Load) Crest Factor 3:1 Conversion Time 0ms Overload Behavior 100–150% staged warnings, bypass timing 30 min / 10 min / 30 sec / 200 ms Efficiency ≥90% (Normal Mode) Battery Voltage 24VDC Battery Quantity 2 (Built-in) Charging Current 1A Dimensions 280 × 144 × 230 mm Weight 7.8 kg Operating Temperature 0–40°C Humidity Range 20%–95% (Non-condensing) Noise Level ≤50 dB Equipment Mode Decentralized