Module E1 - Slide 48

moduleE1_Slide48

In retrofitting and looking at wiring, it's important to be aware that many APS need extra wiring between an APS control board and the pushbutton. Manufacturers may have several different models for different situations, controllers and pedheads. There are some types of APS that can be installed as a direct replacement for a typical pushbutton, but it's important to understand the wiring and features before placing the orders. A control unit/board may be installed in pedhead, the speaker unit, or the controller, depending on which device is being installed. Control board may include sound chips, and switches to control volume, walk indication functions, and microphone sensitivity. The availability of control board locations at the intersection may dictate what type or brand of APS will be possible. If extra wiring is needed, it may not be included from the manufacturer without additional being ordered.