The 501-1126 is Emerson’s coil inlet temperature sensor. It is designed for measuring the coil temperature of an evaporator. The temperature sensor has a 10K Ω thermistor that is enclosed in a nickel-plated brass shell with epoxy. The sensor has a red 20’ pigtail. The wire is a 22 AWG CL3X cord with 2 conductors. The cable is UL rated for 90°C.