Security DRS Series ModelDRS-240 / DRS-480 Wattage : 240W & 480WFeatures :Universal input 90~305VAC (277VAC available)All-in-one function with Power supply, DC-UPS, battery charger and status monitoring in ONE compact unitSignal and alarms design meet UL2524, NFPA1221, BS EN/EN54-4 and GB17945 requirementForm C relay contacts and LED indicators for AC Fail, Battery Low, Charger Fail, and DC-OKBuilt-in MODBus protocol, CANBus optionalCharging curve can be set with SBP-001