PS Engineering
PMA450B Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0600
Page 3-8
Rev. 5, August 2020
You can reset the recordings to the factory stored default messages by clicking the lower button. See
for the default messages.
USB Charging Port (10)
The PMA450B contains a USB-C charging port that is capable of providing 5 VDC, 3.5 amps of current (at
least 15 watts) to power or charge the batteries in smart phones and tablets used as Personal Electronic De-
vices. This is NOT a data transfer jack.
