It acts as a lockout mechanism to manage the transition between the primary heat pump and auxiliary electric or gas heat based on outdoor ambient temperature

Designed for rugged performance in demanding environments

Standard Nordyne 621831 units are often 115V

Industrial-Grade Reliability: Built to withstand the high-cycle demands of agricultural and industrial HVACR environments

Maxitrol TD92-0509 Temperature Selector Refrigerant It acts as a lockoutThe Maxitrol TD92 0509 Temperature Selector is a professional grade remote temperature dial engineered for the Selectra Series 92 electronic gas modulation system. This component provides a precise setpoint range of 50F to 90F (10C to 32. 2C), serving as a reliable control interface for indirect fired furnaces and makeup air heaters. Unlike standard residential thermostats, this industrial temperature controller utilizes a 6 place terminal block for