Features： 1、Over Load Protection: LED red light turn on , lock, buzzer alarm, DC to AC priority automatically switch to the mains, switch indicator light. Automatically restored automatically switch to the inverter. 2、Undervoltage and Overvoltage Protection: LED red light turn on , automatic recovery, buzzer alarm, DC to AC priority automatically switch to power, switch indicator light. Automatically restored automatically switch to the inverter power supply, switch indicator light. 3、High Speed Intelligent Cooling Fan: The integrated cooling fan helps reduce heat, and accelerating heat dissipation helps reduce heat. It is normal for the metal shell to heat up when the inverter is working. The inverter uses a built in fan and metal shell to dissipate heat. 4、Aluminum Alloy Housing: The inverter housing is made of aluminum alloy, which provides advanced protection against drops and bumps. 5、Applications: Suitable for most terminal equipment, such as cars, RVs, boats, yachts, solar panels, small power tools such as water pumps, vacuum cleaners, drills, chainsaws, heaters, water heaters, coffee machines, fans, refrigerators, DVDs, PCs, mobile phone, etc. Specification： Item Type: Sine Wave Inverter Material: Aluminum alloy Gross Weight: 1044g / 36.8oz Product Size: 19.5x12.5x5.5cm / 7.7x4.9x2.2in Power: 300W Cooling: Smart air cooling (fans start over 45 degrees) Package List： 1 x Inverter 2 x RV Line 1 x Insert Car Fuse