... 2.short circuit ,over voltage protection 3.Warranty:24 months wall mount 220v 120vac to 24v 12vdc power supply : Input Voltage100~ ... , no low voltage, no bad led indicator, low ripple, with right cables , no bad ultrasonic bonding, etcVisual full inspection: ... , no label misaligned, etc2 sampling inspection:IQC (incoming quality control): according to AQL-MIL-STD-105E level II standardOQC (outgoing ...