An agricultural sprayer (10) is disclosed. The agricultural sprayer (10) has a spray boom (22) with spray sections (30), and a spray controller comprising: at least a first and a second infinity switches (60A, 60B, 100A, 100B, 260A, 260B), each having an actuator； the at least first and second infinity switches (60A, 60B, 100A, 100B, 260A, 260B) arranged in parallel with their actuators oriented in a same actuation polarity direction； wherein each spray section (30) is enabled by a first-direction motion of a corresponding actuator, and wherein the each spray section (30) is disabled by an opposing-direction motion of the corresponding actuator； and wherein the first infinity switch (60A, 100A, 260A) controls spray sections (30) mounted on a left side of the spray boom (22), and the second infinity switch (60B, 100B, 260B) controls spray sections (30) mounted on a right side of the spray boom (22).
