NCTS Uninterruptible Power Supply (UPS), likely the NU7215 model. Key features include:
Function: Provides backup power during outages.
Power Rating: 1500VA/900W or 2000VA/1200W depending on the model.
Voltage Stabilization: Boost and buck Automatic Voltage Regulation (AVR).
Battery: 12V, with models using either 7A or 9A batteries.
Recharge: Auto-restarts when AC power returns and offers off-mode charging.
Reliability: Microprocessor control enhances performance.