... load burn-in test 4) Protect Features: 1) High efficiency, low operation temperature 2) Built-in EMI ... Protection: Overload, short circuit 5) Competitive price, high reliability 6) Output: D120U1, D120U2, D120U4 7) Input: 110/220VAC, ... 1.0%±1.0%±1.0%±1.0%LINE REGULATION±0.5%±0.5%±0.5%±0.5%LOAD REGULATION±1.0%±0.5%±0.5%±0.5 ... 5kg,40pcs/20kg 75W AC to DC Single Output SMPS switching power supply(S-50-12)