Package Include: 1 x 120W 12V single output industrial DIN rail power supply DR-120-12 specifications: output power (W): 120 ripple & noise (mV p-p): <120 mV load regulation: ± 1 % line regulation: ± 0.5 % efficiency: >86% size (L x W x H): 2.58 x 3.94 x 4.93 inches Overvoltage Protection: When the outputvlotage is more than 135%, the output will be turned off. It will recover automatically after the abnormal. detailed specifications: primary output voltage (VDC): 12 output current (a): 10 maximum output power (W): 120 family: DR-120 input voltage: 85 to 264 VAC input frequency: 47Hz to 63Hz maximum input current (a): 2.25 output connector Type: screw terminal operating temperature-min (CEL):-30 to 70 °C operating temperature-max (CEL): 50 agency approvals: 3C/CE/ISO color: silver style: DIN. Brand Name: NVVV Connection instruction ?: Ground wire L: Live wire N: Negative wire +V: DC power output ''+'' -V: DC power output ''-'' +V ADJ: output voltage regulation