11 Unit+MTS22 Units+MTS3Choose Your Setup1120V Output2240V Output3Built to Last 16 Years4Powers Your RV & EV1AC Wall Charging2AC+Solar Charging3Solar Charging4Gas Generator Charging5DC-DC Alternator Charging1Seamless Switch2Multi-space Backup3Smart Home, Less Cost4Save $4,238/Year. 4kW–8kW Auto Backup, Ready in Half the Time: Turn your 3600 Pro Max into a home energy hub using a manual transfer switch. Faster and simpler to install than standard Automatic Transfer Switch setups — with the same 4kW–8kW of reliable auto backup power. With a <10ms UPS switch—faster than a blink—your computers and appliances keep running without a hitch. No more manual restarts, ever. 16+ Years Lifespan, EV-Grade LFP Cells: 6,000-cycle battery, 5VA fireproof housing, and a dedicated EPO emergency shutoff. Built for permanent home installation with the safety credentials to match. Stay Quiet, Stay Powered Operating at under 30dB: as quiet as a library, the 3600 Pro Max keeps things peaceful for you and the neighborhood. With 8 ways to recharge, including gas generator compatibility, you'll always have a backup for your backup.