Join the linear actuator into the 4-pin connector by twisting the best exposed wires collectively and masking it up with electrical tape. Normally the wires over the actuator and connector can be found in blue and brown colors and they may be connected accordingly. Controller: A controller makes sure that https://pneumatic-actuator43118.mdkblog.com/19877200/the-best-side-of-pneumatic-actuator-butterfly-valve