Module F - Slide 21


Some APS are designed to be adjusted with remote handheld devices, as shown in the photo above. While instructions may say to operate from 3 feet away, many users have found that the handheld device needs to be as close as possible to the APS; bright sunlight can affect the communication of the device so shield from sun if problems occur.

Some manufacturers allow you to configure all the devices at an intersection by interacting with only one unit.