- Input : Rated voltage : 230 V Voltage tolerance : 180 ÷ 270 V Frequency : 50/60 Hz with automatic selection Mains connection : Cable with plug - Output : Rated voltage : 230 V ±10% Rated frequency : 50/60 Hz ±1% Protection : Overload, significant discharge and short circuit Sockets : 4 sockets for UPS and surge protection 2 sockets for surge protection - Batteries : Type : Sealed lead-acid maintenance free - expected life 3/5 years Back-up time : 15 min