... over current and short circuit protection CE, CCC Input: Universal AC voltage Frequency: 50/60Hz Line regulation range: maximum ± 0 ... In-out:≥ 50m Ohms, DC 500V In-ground: ≥ 50m Ohms, DC 500V Out-ground: ≥50m Ohms, DC 500V Environmental requirements: Operating ... 129*98*40mmWeight: 235g EMC: EN55022, GB3954Easeking 120W led switching power supply are special in manufacturing the led sign, led box ...