About us:<br> Professional manufacturer of pure sine wave inverter for 8 years. Original factory, provide the reasonable price and high quality and fast response to your questions within 24 hours.<br><br> Product details:<br> DC input: 24V <br> DC input range: 21V-30V <br> No Load Current Draw: 3A<br> Efficiency:85%-90%<br> AC output: 120V<br> AC Regulation:3%<br> Frequency: 60Hz<br> Socket:15a USA type Low Voltage Alarm:19.5V-21.5V<br> Low Voltage Shut Down: 18.5V-20.5V<br> Over Load: shut off, recover manually<br> Over Voltage Shut Down:30.5V <br> Over Thermal: Shut Off Output Automatically, Over voltage protection<br> Cooling Ways: Cooling Fan will run when the temperature is over 50 degree<br><br> Precautions:<br> 1. Please use the standard battery cables we sent, or a full power output may not be guaranteed. And the fuse are just spare parts.<br> 2. Please do not connect the inverter with the grid power, and a reverse connection of positive and negative is also forbidden.<br> 3. Please do not overload. If your applications are inductive loads, please choose the inverters whose continuous power is 3-7 times higher than the watts of your appliances. If you want to power up a refrigerator, we suggest you use 10 times higher power inverter.<br> 4. Please turn off the load first then turn off the inverter. And as there is a soft start function, please turn on the inverter first then turn on your loads, or the output may not stable at the first seconds.<br> 5. For a red light flashing, it is a kind reminder to note you the input voltage is a bit high, you can regardless of it. If the input is too high, the inverter will shut down automaticly. <br> 6. The output voltage can be adjusted in a little range.<br>