Quality Assurance True Sine Wave Caravan Inverter with Transfer Switch

Pure sine wave output closely mimics the smooth, clean sine wave of utility power. It is ideal for sensitive electronics, motors, audio/video equipment, and any device that might suffer from noise, heat, or interference. Modified sine wave is a less complex and less costly waveform. It works fine for many simple appliances (lights, some tools, chargers), but may cause issues (noise, heat, lowered lifespan) with sensitive equipment.

To size your inverter properly, consider two things: Continuous (running) power: sum of power (watts) of all appliances/devices you plan to run at the same time. Startup / surge power: many devices (motors, refrigerators, pumps, AC units) need a much higher power for the first few seconds during start-up. Choose an inverter whose surge capacity can handle that. As a rule of thumb, it is safer to pick an inverter 20-30% above your estimated load, to allow margin for future additions.

Deep cycle batteries are strongly recommended, as they are designed to be discharged and recharged repeatedly. Car starter batteries (automotive) are not ideal for long durations of discharge. Match the battery's voltage (12V, 24V, 48V etc.) with the inverter-input requirement, and ensure sufficient battery capacity (Ah) to supply the required runtime.

Yes. Our inverters / inverter-UPS units include multiple protection features such as: over-load protection, short-circuit protection, over-temperature protection, under- and over-voltage protection. Some models include cooling fans and status LED / display to alert users.

Absolutely. We offer models suited to mobile and off-grid applications. When using in RV/boat/off-grid, it's important to consider environmental conditions (temperature, ventilation, moisture), battery capacity, load profile, and mounting safety.