The Precedent S-750i Trailer Refrigeration Unit from Thermo King features enhanced operational efficiencies of the Precedent platform and introduces several new first use features. These include a three-speed engine; a next-generation control system; and a diesel electric architecture optimized for shore power integration, which makes the S-750i an ideal investment for customers using or considering shore power operation long-term. Utilizing the S-Series engine, the S-750i meets current and proposed California Air Resources Board Ultra-Low Emission Transport Refrigeration Unit emissions without the use of a DPF. Every S-750i trailer unit also comes equipped with TracKing telematics. Telematics can help fleet owners monitor temperature, offers rapid alarm detection and security alerts when the doors are opened, and detects fuel loss.