Manufacturer Name: Resideo Product Number: TH6100AF2004 OEM Part Number: TH6100AF2004 The Resideo TH6100AF2004 T6 Hydronic Programmable Thermostat is intended to provide precise control over hydronic heating systems, particularly those that use heat slab sensors. It has one heat-only stage and a 5.44-inch LCD screen that displays indoor temperature, mode, and time. https://www.partshnc.com/th6100af2004-resideo-t6-pro-1-ht-slab-sensor-tstat