DescriptionOutput Power:4WUniversal Input Voltage: 100-277Vac,50/60HzAC Input Current: 80mA max.AC Input Power Rating: 5.0W max.Output Current and Voltage: 80-133mA 30-50VdcEmergency Time 1.5HFull Warranty: 5 YearsTest Switch Indicator Light Illuminated Test Switch, indicator LightBattery: Li-ion baSplit Built-In Emergency Backup Battery ttery-7.2V/2900mAhBattery Charging Current :250 mACharging Time 24HoursTemperature Rating (Ambient): -20°C to 55°C (-4°F to 131°F)