Amazon.com: Ups Switching Power Supply 120w 12v 24V with UPS/Charge Function ac 110/220v to dc 12v 24VDC Battery Charger SC-120W-12V 24V (Output Voltage : SC 120 24V) : Electronics
DIN Rail UPS, High Performance 12V-24V UPS DIN Rail Mount, 20 Amp, User Programmable | SourceASI