... power supply, switching mode power supple 25W Single Output Switching Power Supply certificate:CE Switching power supply, switching mode power supple,change power supply,power supply efficiency,adjustable power supply ... 1 minuteWorking temperature ........... -10~60OC (refer to output derating curve)Safety standards ................. Design refer to UL1012EMC ... ±1%100mV78% 110v dc output power supply