©Sealevel Systems, Inc.
HazPAC R9-8.4 Manual
9
SL9257 8/2015
DISPLAY AND TOUCHSCREEN
The HazPAC R9-8.4 features a bright 8.4” TFT LCD with LED backlight, and a durable 5-wire
resistive touchscreen with glass top.
SERIAL COMMUNICATIONS
Connect to a variety of serial peripherals via the HazPAC R9-8.4’s serial ports. Two isolated RS-
485 serial ports are provided, via DB9 male connectors, labeled “RS-485 1” and “RS-485 2” on
the lower front panel of the unit. Switch settings are provided to control the termination and
pull-up/pull-down resistors.
Also provided is a RS-232 serial port with full modem control, labeled “RS-232” on the right side
panel. The interface is via DB9 male connector.