<p>protection mechanism:Input undervoltage protection (): 11-125V adjustable, factory default value 11V</p> <p>Output overvoltage protection (OVP): 1-130V adjustable, factory default value 130V</p> <p>Output overcurrent protection (OCP): 0.01-23A adjustable, factory default value 23A</p> <p>Output over-power protection (OPP): 1-1500W adjustable, factory default value 1500W</p> <p>Over-temperature protection (OTP): 30-99\u2103 adjustable, factory default value 60\u2103</p> <p>Overtime protection (OHP): 1 minute-99 hours and 59 minutes, factory default is off</p> <p>Over capacity protection (): 0.001-9999Ah, factory default is off</p> <p>Over energy protection (OPH): 0.001-4000KWh, factory default is off</p> <p>Precautions:</p> <p>1. AC power cannot be input, let alone 220V mains power. 2. The maximum allowable input voltage is 140V, and no overvoltage input or reverse polarity connection is allowed.</p> <p>3. The output cannot be completely guaranteed to prevent backflow. When connecting the battery, that the output voltage of the power module is always higher than the battery voltage, or connect a diode in series with the positive terminal of the output to prevent one-way conduction.</p> <p>Prevent battery voltage from flowing back and burning the power supply.</p> <p>4. When connecting the output terminal to the battery, be careful not to reverse the positive and negative poles. 5. The product is a step-down module, the maximum output voltage = input voltage * 0.95-1V.</p> <p>Colour:Black</p> <p>Material:ABS</p> <p>Package Contents:</p> <p>1 set x CNC step-down DC module</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>