Honeywell⢠Commercial Automatic Standby Generator 120/240V Three-seâ¢For commercial buildings with 120/240V 3-se serviceâ¢Runs on (LP) Liquid Propane; Will NOT work with NGPowered By Generac's Turbocharged 2.4L Inlinder Liquid Cooled Engineâ¢Closed coolant recovery system for more protection and less maintenancePrecisionPower⢠Electrical Technology - Less Than 5% THDâ¢Utility quality power that won't harm electronics & micro-chip based appliancesDigital SYNC 1.0⢠Generator Controller w/ 2-Screenâ¢Easily view logs of history, maintenance and eventsâ¢External viewing window for generator status & breaker positionState-Of-The-Art Power Maximizing Regulation Systemâ¢Optimized for fast response time to varying loads & +/- 1% Digital Voltage RegulationWhisperCheck⢠Self-Test Exercise Mode - Only 65 dB(A)â¢Slower engine speeds during testing, produces less noise and saves fuelAluminum Enclosure w/ RhinoCoat⢠Finishâ¢Withstands winds up to 150 m& provides protection from the r>Requires* Honeywell⢠Automatic Transfer Switch (Sold Separately)â¢Provides fully automatic operation & total system compatibilityBest-In-Class 5-Year Comprehensive Warranty - Not For Sale In CA/MA