Honeywell Direct Coupled Linear Valve Actuator, 160 Lbf Stem Force, 24Vac, Fails in Place, 1/2″-1″ Stroke, 2-10Vdc, 4-20Ma, 135 Ohm Potentiometer Control Signal, 63 Second Nominal Drive Time at 3/4″ Stroke, 20K Ohm Voltage Input Impedance, 237 Ohm Currect Input Impedance, 32-130 Degree Ambient Temperature Range, 15-95% RH Operating Humidity Range