United Electric (UE) P/N 1GSWLLTH1-W074, -40 to 1000 F Set Point Range, Remote Bulb Sensor, 2.5" Sensor Length, SPST 8-50 VDC at 100 mA Discrete Input Powered Switch, 2-Wire Discrete Input Power for 24 and 48 VDC Logic Solver Supply Power, Programmable Ov