A range of self-powered control systems that incorporate sensor, actuator, set point adjustment / indicator for use with the followingvalve types:-2-port KA, KB, KC, KX, KY, SB, SBRA, BX and BXRA, BM, BMRA, BMF, BMFRA, NS and NSRA3-port TWAvailable typesSet point adjustment at sensorSA121 For use on 2-port valves DN15 to DN803-port valves DN20 to DN50