IP67 waterproof (dust-tight and protected against the effects of temporary immersion in water). Epoxy encapsulated, with metal case. This is a very well-designed and built, high reliability supply. 480 watts maximum output. 12 volts DC output. (Constant voltage.) 40 amp maximum output. Built-in active Power Factor Correction (PFC). Working temperature: -40 to +70°C. Bare wire cables in and out. Protections: Short circuit / Overload / Over voltage. Overload protection type: hiccup mode, recovers automatically after fault condition is removed. Full load burn-in tested. Built-in electromagnetic impulse filter. Low ripple noise. Universal, auto-sensing: accepts 90-305 VAC or 127-431 VDC input without adjustment. No minimum load and no load balancing required. Proven reliability and rugged housing. UL8750, EN61347-1, EN61347-2-13 independent IP67 approved; Design refer to UL60950-1, TUV EN60950-1. Warranty: 5 years. Do not use a dimmer on the primary side.