Functional Devices RIBTWX2402SB-LN-N4 : Enclosed LonWorks¸ Dual I/O Device, One Discrete Output + Override, One Discrete Input (Current Sensor 0.25-20 Amp, Relay Load Sensing) 24 Vac/dc or 208-277 Vac Power Input, NEMA 4 Variant, Made in USA, UL Listed