The Marley Engineered UHMT2 Stat Kit is a field-installed, two-stage internal thermostat kit designed for high-performance thermal management in industrial and commercial environments. Engineered as a direct 12-digit UPC 685360152424 replacement, the UHMT2 is identical to HUHAAMT2 and provides precise temperature regulation across a 40°F to 80°F range. This 2-pole control kit is specifically compatible with Marley's horizontal and downflow unit heaters, including the Berko HUHAA and QMark MUH series. It supports heavy-duty electrical loads with a rating of 25 Amps at 120/240 VAC or 22 Amps at 277 VAC, ensuring robust reliability for multi-stage heating cycles in warehouses and workshops. Key Benefits for Contractors: OEM Compatibility: Replaces factory-standard components for a seamless fit in Marley Engineered Products unit heaters. Precise Two-Stage Control: Enables efficient two-stage operation to maintain tighter temperature tolerances and improve overall energy efficiency. Industrial Build Quality: Built with high-capacity 2-pole snap-action switches to handle resistive heating loads without premature failure. Comprehensive Field Kit: Each Marley UHMT2 stat kit includes the thermostat, adjustment knob, and necessary mounting hardware for rapid installation in the field. Common Questions & Technical Support: Is the UHMT2 compatible with single-phase and three-phase units? Yes, this Marley unit heater thermostat is rated for use with 120V, 240V, and 277V systems and can be integrated into both single and three-phase unit heater configurations as an internal control. Can this thermostat be used for cooling applications? No, the Marley UHMT2 is a heating-only control designed specifically for unit heaters. It is indexed for a 40-80°F setpoint range typical of frost protection and comfort heating in high-ceiling spaces. What is the difference between UHMT2 and HUHAAMT2? There is no functional difference; UHMT2 is identical to HUHAAMT2. These part numbers are used interchangeably across the Marley, Berko, and QMark brand lines for the same two-stage thermostat kit. Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.