Pro Series inverters are the perfect complement to generators when shore power is unavailable. They are designed for RV and marine electrical systems that already have a battery charger or generator installed. They deliver modified sine wave power for small appliances, TVs and other electronics from a battery bank. Transfer switch detects when line, shore or generator power changes to ensure power is always available. Power Supply: 12V, Continuous Watts: 1,800, Modified Sine Wave: Yes For RVs, marine use, jobber trucks and utility vehicles that have AC electrical system, battery charger or generator installed Delivers power for small appliances, TVs, motor loads and other electronics Built-in transfer switch Remote for easy monitoring and control Has 15 Amp circuit breaker Automatic overload protection, ground fault protection, over-temperature shutdown Meets FCC Class B regulations and UL 458 certification Conformal coated electronics resist moisture Designed to be hardwired using a terminal strip or by connecting AC through included GFCI receptacle Can be mounted vertically or horizontally