Please make sure that UPS is operating in allowed environment. Limits may very depending on model, but safe conditions include: • 0°C – 40°C (for long battery life, keep the UPS at an ambient temperature of 25°C) • 20% – 80% relative humidity without condensation • No standing or running water in the vicinity • No exposure to direct sunshine or heating equipment • Appropriate electrical input TN-S 230V grounded • Secure enough space for air circulation; never cover the cooling vents or fans • Equipment is exlusively for indoor use! IP rating of 20!