We will use the PA-17 Heavy Duty Linear Actuator as an example in this article. You can choose a control box rated to provide this much current, but what if you wanted the range and convenience of the Wi-Fi control box? The PA-35 Wi-Fi Control Box limits you to 10 Amps per channel. However, the solution to this problem is to use relays in conjunction with the control box, which allows you to control up to four actuators at any current rating, as long as the mechanical relays are rated to handle it.
Unplug all power sources from the Wi-Fi control box before opening it up. From here, you can unscrew the 4 screws shown below.
Step 2: Access the Circuit Board
Once the cover is removed, unscrew the 3 screws to lift the circuit board.
Partially Slide Out Your Circuit Board
Lift the side of the circuit board that is opposite of the LEDs. This is to ensure that the circuit board can slide out without bending the LEDs. Note that the circuit board does not need to be removed completely – enough space is required to have access to the connection on the side of the board.