Linear-interactive uninterruptible power supply with pure sine wave (hereinafter - UPS) of the RTSW series is designed for operating electrical appliances in regions with unstable voltage and frequent power outages. Modern electronic devices have a minimal necessary tolerance to instability in power supply parameters. Continuous operation under conditions of reduced or increased mains voltage significantly decreases the lifespan of any household electronic equipment. The UPS protects electronic devices for business or office from high or low voltage, impulse disturbances, and dangerous high voltage. In cases of unstable power supply parameters, the UPS allows continued operation from an external battery for medium to long durations. A functional feature of the UPS is its wide input voltage range when operating from the mains, automatic voltage regulation (AVR), status indicators, audible alarms, and operation from an external battery. The RTSW series UPS is used for gas boilers, circulation pumps, refrigerators, and other electronic equipment. The RTSW series UPS will be an excellent choice against the constant threat of power outages and will ensure optimal operating conditions for your equipment. Features: • Microprocessor control; • Wide input voltage range; • Enhanced accuracy of output voltage stabilization; • Protection of consumer devices from high and low voltage in the network; • Protection against overload and short circuit; • Protection against low battery discharge;