Product introduction:The input is AC110/220V single output DC 12V33A for CCTV camera power supply 400W also called Switching Power SupplyProduct parameter:Item ModelHSJ-400-12DC output12V 33AOutput current range0-33AOutput power (Watts)400WWave and noise120mVp-pInlet stability±0.5%Load stability±1%Working efficiency82%DC volt adjust range10.5-13.8VAC input voltage range90~132VAC/180~264VAC (by switch) 47~63Hz;248~370VDCOverload protection105%~135%, Pulsing hiccup shutdown; Reset, auto recoveryOver-voltage protection15-16VHigh-temp protectionRTH3>=65°C FAN ON<=55°C FAN    OFF>=80°C Cut off output(5~15V)RTH3>=70°C FAN ON<=60°C FAN    OFF>=85°C Cut off output(24~48V)Temp coefficient±0.03%°C(0~50°C)Setup rise hold up time200ms,50ms,20msWithstand voltageInput and output interval,1.5KVAC,Input and enclosure,1.5KVAC,Output and enclosure,0.5KVACIsolation resistanceInput and output interval,Input and enclosure,Output and enclosure,500VAC/100M OhmsWorking temp and humidity-10°C~+50°C,20~90%RHStorage temp and humidity-20°C~+85°C,10~95%RHItem size215*115*50mm or 84.6*45.3*19.7inWeight0.87Kgs /30pcs /ctnNote: The testing condition for the parameter above is 230VAC inputProduct feature:• Using bare cooper wires transformer, high quality• Use turbine temperature control fan, long lifespan• Built-in EMI filter, low ripple and noise• Cooling by free air convection•Low power consumption, high reliability,• Long using lifetime, more than 50,000 hoursShipping and servicing:We will deliver goods according to your request, you can choose DHL, UPS, FedeX, TNT, special line, Air Cargo, Sea Cargo, etc.Our power supplies are strictly tested before sale. The warranty is two-years, during this period, we will repair the products for free if the malfunction is caused by the quality of our products.Recommendations: